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How to run a LinkedIn connection campaign on Aimfox: architecture, targeting, and acceptance rate optimisation

How to run a LinkedIn connection campaign in Aimfox: campaign architecture, prospect targeting, message sequencing, and acceptance rate optimisation with benchmarks and troubleshooting.

M

Marcus Chen

B2B outreach strategist, 10,000+ LinkedIn connections built · Updated June 24, 2026

Last updated: June 2026 · Marcus Chen, B2B outreach strategist, 10,000+ LinkedIn connections built


TL;DR — 7 things to know before reading

  • A LinkedIn connection campaign in Aimfox has four structural components: prospect source, connection note, follow-up sequence, and reply handling — all four must be configured before launch
  • Acceptance rate is the single most important signal for campaign health: above 25% is healthy, 15–25% is marginal, below 15% indicates a targeting or message problem requiring immediate diagnosis
  • Prospect targeting precision drives campaign ROI more than any other single variable; broad lists produce low acceptance rates and exhaust your daily limit on unqualified contacts
  • The connection note (up to 300 characters) should reference something specific to the prospect's role, company, or recent activity — not describe your product
  • Follow-up sequences send only to prospects who have accepted the connection; three steps covering introduction, value, and ask — each with a distinct angle — outperform single-message approaches
  • Per LinkedIn's official connection limit policy, LinkedIn limits connection requests by account; conservative daily limits, gradual ramp, and consistent working hours protect account health
  • Pair LinkedIn connection campaigns with verified contact data from Quarvio (from $129 for 5,000 contacts), cold email via Instantly, and email infrastructure from Inframail for a complete multichannel outreach stack

Our take

A LinkedIn connection campaign is not a send-and-forget operation. It is a system with distinct inputs (who you target, what you say, when you send) that produces measurable outputs (acceptance rate, reply rate, pipeline contribution) which you use to refine the next version of the campaign. Operators who treat a LinkedIn campaign as a broadcast — set it up, launch it, move on — consistently underperform against operators who treat it as an iterative funnel.

Aimfox gives you the infrastructure to run this system at scale: automated connection sends within configurable safety limits, sequence automation for accepted connections, a unified reply inbox, and campaign-level analytics that let you diagnose what is working and what is not. But Aimfox is a tool, not a strategy. The strategy is in the architectural decisions you make before you click launch.

This guide covers the full connection campaign architecture in Aimfox: how to structure targeting, how to write connection notes that get accepted, how to build follow-up sequences that generate replies, and how to read campaign data to iterate rather than just run. Quarvio provides the verified contact data that informs targeting. Instantly handles the parallel cold email layer. Inframail manages the email infrastructure. Aimfox is the LinkedIn side of that system.


How Aimfox connection campaigns work

An Aimfox connection campaign executes in three phases:

Phase 1 — Connection: Aimfox sends a connection request (with or without a note) to each prospect in the source list, according to your configured daily limit and working hours. The campaign continues sending until either the prospect list is exhausted or you pause it.

Phase 2 — Sequence: For every prospect who accepts the connection request, Aimfox automatically triggers the follow-up message sequence. Messages are sent at the delays you configure. The sequence stops when a prospect replies (if Stop on Reply is enabled) or after all sequence steps have been sent.

Phase 3 — Reply management: Replies from all connected LinkedIn accounts appear in Aimfox's Unibox for centralised management. You tag, respond, and hand off to your CRM or next action from within Unibox.

Each phase has distinct configuration decisions that affect campaign performance. The most common mistake is under-investing in Phase 1 configuration (targeting and note) and over-investing in Phase 2 setup (elaborate sequences) while Phase 1 is producing low acceptance rates.


Step 1: Define the campaign architecture before creating anything in Aimfox

Before creating a campaign in Aimfox, write down the answers to six questions. This takes 10 minutes and prevents the most common campaign failure modes.

Sub-step 1.1: Who is the ICP?

The Ideal Customer Profile (ICP) for this specific campaign must be defined at the job title, company size, industry, geography, and seniority level. A specific ICP is not "sales people." A specific ICP is "VP of Sales at B2B software companies with 50–500 employees, based in the US and Canada."

The more specific the ICP, the more targeted your prospect source will be, the higher your acceptance rate will be, and the more precisely you can write a connection note that references something relevant to their world.

Sub-step 1.2: What is the connection note angle?

Choose one of four proven connection note angles before writing anything:

  1. Relevance angle: "I work with [job title type] at [industry type] companies and thought connecting would be worthwhile given we likely deal with similar challenges." Works well for broad senior audiences.
  2. Trigger angle: "Saw your recent post about [topic] and wanted to connect with someone who thinks about this the same way I do." Requires visibility into prospect activity — best for targeted premium lists.
  3. Shared context angle: "We're both connected to [mutual name] and I'm building relationships in the [industry] space — would love to connect." Requires mutual connections.
  4. Direct intent angle: "I work with [job title] teams on [specific outcome]. Would love to have you in my network even if the timing is not right today." Transparent but low-pressure.

Select one angle per campaign. Mixing angles within a single campaign note template produces a note that reads as generic because it is trying to work for everyone.

Sub-step 1.3: How will you source prospects?

Options:

  • LinkedIn People search URL: fastest setup, 1,000-prospect maximum per search
  • Sales Navigator Lead search URL: more precise filters, higher prospect capacity
  • CSV upload: best for curated lists (e.g. from Quarvio contact lists with LinkedIn URLs)

For a first campaign, LinkedIn People search is sufficient. For scale, Sales Navigator or CSV from Quarvio.

Sub-step 1.4: What does the follow-up sequence do?

Define the purpose of the sequence before writing messages:

  • Is the goal to book a call? Then the sequence is an introduction, value proof, and call ask.
  • Is the goal to offer a resource? Then the sequence is an introduction, resource offer, and follow-up check.
  • Is the goal to qualify first? Then the sequence is an introduction, diagnostic question, and action based on answer.

Each of these goals produces a different sequence structure. Defining this before writing ensures the messages work as a coherent progression rather than a list of disconnected pitches.

Sub-step 1.5: What is the reply handling process?

Define what happens when a prospect replies before the campaign starts. Specifically:

  • Who responds to replies?
  • What are the two or three most common positive reply scenarios and what is the next action for each?
  • What is the disqualification message for a reply that indicates no fit?

Having this defined means replies get handled within hours, not days. Fast reply handling is a significant conversion factor in outbound.

Sub-step 1.6: What are the success metrics for this campaign?

Set expectations for:

  • Acceptance rate target: 25%+ (calculate at the end of week 2)
  • Reply rate target: 5%+ on the first follow-up message
  • Calls booked target: specific number per month from this campaign

These targets let you evaluate campaign performance against expectations rather than just observing the numbers.

Benchmark: all six architecture questions answered on paper or in a doc before creating the campaign in Aimfox. This step takes 10 minutes and prevents 80% of the most common campaign failures.


Step 2: Source and validate your prospect list

Sub-step 2.1: Build a LinkedIn search with precision filters

Log in to LinkedIn. In the search bar, search for the primary job title in your ICP. Apply the following filters:

  • Connections: select 2nd — these are people who are not yet connected to you but are connected to your connections. Second-degree prospects are warmer than third-degree (who have no connection path to you).
  • Industry: select the 1–3 industries most relevant to your ICP
  • Company size: select the headcount range that matches your ICP (e.g. "51–200" for mid-market)
  • Geography: select regions or countries where your ICP is concentrated

After applying all filters, check the total result count. Under 100 results suggests filters are too narrow. Over 10,000 suggests filters are too broad. A well-filtered search for a specific ICP typically returns 500–3,000 results.

Copy the full search URL from the address bar. This URL is what you will paste into Aimfox.

Sub-step 2.2: Add job title variations

Your ICP job title may appear under multiple title variations on LinkedIn:

  • "VP of Sales" vs "VP Sales" vs "Vice President of Sales"
  • "Head of Sales" vs "Sales Director" vs "Director of Sales"
  • "Chief Revenue Officer" vs "CRO" vs "Revenue Leader"

LinkedIn search does not include synonyms automatically. Run a separate search for each major title variation and create a separate Aimfox campaign segment for each, or use LinkedIn's OR operator to combine: search for "VP Sales" OR "VP of Sales" OR "Sales Director" in the keyword field (with quotes around each phrase).

Sub-step 2.3: Validate the list size against your daily limits

If your Aimfox daily limit is set to 15 connection requests per day and you are running Monday–Friday, you will contact approximately 75 prospects per week. A 300-prospect search URL runs for 4 weeks. A 1,500-prospect list runs for 20 weeks.

Calculate the campaign run time at your configured limits before launching. If the prospect pool runs out faster than expected or slower than useful, adjust either the prospect source size or the daily limit.

Sub-step 2.4: Use Quarvio CSV for enriched targeting

Quarvio contact lists include LinkedIn URL fields for contacts where available. If your outreach strategy is multichannel (LinkedIn + cold email to the same prospects), use a Quarvio list as your single prospect source:

  1. Order a Quarvio contact list filtered to your ICP (from $129 for 5,000 contacts, $199 for 10,000, $399 for 25,000, $699 for 50,000)
  2. Export the CSV
  3. Filter rows with a LinkedIn URL
  4. Upload the filtered CSV as the Aimfox prospect source
  5. Use the same contact's business email in Instantly for the parallel cold email campaign

This creates a coordinated multichannel approach where both channels are hitting the same verified contacts, not different lists.

Benchmark: prospect list sourced with precision filters applied, 200+ profiles available, list size calculated against daily limits, and run duration estimated.

Failure mode: using a keyword-only search without any industry, company size, or geography filter. This produces a prospect list that includes every person on LinkedIn with the keyword in their title, resulting in low acceptance rates from irrelevant outreach to companies and roles outside the ICP.


Step 3: Write the connection note

Sub-step 3.1: Apply the 300-character constraint to your chosen angle

300 characters is approximately 45–55 words. This is enough for a single sentence of context and a brief connection request. It is not enough for a pitch. The common mistake is treating the connection note as an opportunity to explain what you do and why they should care. The only goal of the connection note is to get the accept.

The note structure:

  • One sentence of specific context or relevance (20–25 words)
  • One brief reason to connect (15–20 words)
  • Optional: name or CTA (5–10 words)

Example (relevance angle): "Hi [firstName], I work with [jobTitle] teams at [company]-sized companies on outreach strategy. Building my network in this space — would love to connect."

Character count: 156. Well within limit. One personalisation variable per field auto-filled at send time.

Sub-step 3.2: Do not include a sales ask in the connection note

The connection note is not a sales message. Any reference to "a quick call," "15 minutes," "I wanted to show you," or "we help companies like yours" in the connection note signals sales automation and reduces acceptance rates significantly.

The pitch comes in the sequence — after the prospect has decided to add you to their network. Before that decision, the only goal is to give them a reason to accept.

Sub-step 3.3: Test the note on five people manually first

Before loading the note into Aimfox for automated sending, send it manually to five prospects who match the ICP. Track whether they accept within 48 hours. A 3-out-of-5 acceptance rate (60%) indicates a strong note. If fewer than 2 accept, revise the note before scaling.

This five-person manual test costs less than an hour and prevents the cost of sending a low-performing note to hundreds of contacts at scale.

Sub-step 3.4: Build the note in Aimfox's campaign editor

In Aimfox, navigate to Campaigns → New Campaign. Enter:

  • Campaign name (internal label, e.g. "VP Sales US Mid-Market Q3")
  • Prospect source (paste the LinkedIn search URL or upload CSV)
  • Connection note (paste your drafted note using the variable insertion UI for [firstName], [jobTitle], [company])
  • Character count: verify under 300 before saving

Aimfox shows the character count in real-time as you type. Stay under 280 characters to leave buffer for longer first names and company names.

Benchmark: connection note is 150–280 characters, includes at least [firstName], opens with context not a pitch, and has been manually tested on 5 prospects with 3+ accepts.

Failure mode: writing the connection note inside the Aimfox editor without pre-testing it. Scaling a poor note to 100+ sends per week before validating it means weeks of data at a bad conversion rate.


Step 4: Configure the follow-up message sequence

Sub-step 4.1: Structure the sequence architecture

A three-step sequence is the standard for Aimfox connection campaigns. This structure reflects how professional relationships progress: introduction → value → ask.

Message 1 (sent 24–48 hours after acceptance): introduce yourself in one or two sentences and reference why you connected. No pitch. The first follow-up is not a pitch — it is an introduction that makes the prospect glad they accepted. Keep it under 100 words.

Message 2 (sent 3–5 days after Message 1): provide something specific and useful. This could be a relevant insight, a benchmark, a case study result, or a resource that applies to their role and challenge. This message earns the right to make an ask by demonstrating that you are not just broadcasting. Under 150 words.

Message 3 (sent 7–10 days after Message 2): make the ask. Keep it low-pressure and specific. "Would you be open to a 20-minute call to see if this is relevant to your team?" is better than "Are you free for a call?" The specific time and conditional framing ("if this is relevant") signal respect for their time.

Sub-step 4.2: Write Message 1

Message 1 should be conversational in tone, specific in reference, and brief in length. Examples of what works:

Hi [firstName], thanks for connecting. I work with [jobTitle] teams on outbound systems — mostly helping teams build repeatable pipeline through targeted email and LinkedIn. Would love to stay in touch as you work through similar things.

This message:

  • References a specific outcome ("repeatable pipeline")
  • Connects the outcome to their role ([jobTitle])
  • Does not pitch anything
  • Keeps the door open without demanding a response

Sub-step 4.3: Write Message 2

Message 2 provides value. It should reference a specific insight, benchmark, or resource — not a vague offer to "share more." Specific beats generic at every step.

Per Instantly's cold email benchmarks, emails and LinkedIn messages referencing specific benchmarks or data points get higher reply rates than generic value statements. Apply this to Message 2:

Hi [firstName], one thing I see consistently with [jobTitle] teams: reply rates on LinkedIn drop sharply when connection volume exceeds what the follow-up capacity can handle. We ran a test across 12 campaigns last quarter — the teams that kept daily sends at 20 and focused on sequence quality outperformed teams sending 50+/day by 3x on calls booked. Happy to share the full breakdown if useful.

This message provides a specific finding, names the problem in the context of the prospect's role, and offers something concrete.

Sub-step 4.4: Write Message 3

Message 3 makes the ask. The ask should be:

  • Specific about what you are asking for (a call, not "a chat")
  • Specific about how long (20 minutes, not "some time")
  • Conditional ("if this is relevant," not "you need to see this")
  • Simple to respond to (yes/no/not now, not a paragraph of questions)

Hi [firstName], given what I shared in my last message — would you be open to a 20-minute call to walk through what a similar system would look like for your team? No pressure either way.

Sub-step 4.5: Configure delay timing in Aimfox

Navigate to the Sequence builder in your campaign. Add three steps:

StepTriggerDelayMessage
Message 1Connection accepted24–48 hoursIntroduction
Message 2Message 1 sent3–5 daysValue
Message 3Message 2 sent7–10 daysAsk

Enable Stop on Reply at the campaign or sequence level. This prevents Message 2 from sending to a prospect who already replied to Message 1.

Benchmark: three-step sequence configured with distinct angle per step, delays set at 24+ hours for Step 1, and Stop on Reply enabled.

Failure mode: a sequence where all three messages have the same pitch angle. A prospect who did not respond to the first pitch will almost never respond to the second or third identical pitch. Angle variation is not optional.


Step 5: Set sending parameters and safety limits

Sub-step 5.1: Set the correct starting daily limit

Per LinkedIn's official connection limit policy, LinkedIn's limits on connection requests vary by account age and activity history. Aimfox lets you set the daily limit independently of LinkedIn's maximum.

Start at:

  • New LinkedIn accounts or accounts not previously used for outreach: 10 requests/day
  • Accounts with 12+ months of normal LinkedIn activity: 15–20 requests/day
  • Accounts with prior outreach tool use and no restriction history: 20–25 requests/day

Do not start at your maximum allowed daily limit. Start conservative and increase by 5/day every two weeks if acceptance rates are healthy and no restriction signals appear.

Sub-step 5.2: Configure working hours to match the prospect timezone

If your ICP is in US Eastern Time:

  • Working hours: 8 AM–6 PM EST, Monday–Friday

If your ICP is in Western Europe:

  • Working hours: 8 AM–6 PM CET, Monday–Friday

Aimfox sends connection requests only within the configured window. All requests are queued outside this window and released at the start of the next working day. This means the campaign appears to be operated by a person sitting at a desk during business hours — which it is, in effect, because the Aimfox configuration enforces this boundary.

Sub-step 5.3: Set minimum delays between sends

Configure a minimum delay of 90–120 seconds between each connection request send in Account Settings. Maximum delay: 180–300 seconds. Aimfox randomises within this range. Random variation mimics human behaviour more accurately than fixed intervals.

Benchmark: all three sending parameters (daily limit, working hours, delay range) configured before campaign launch, not after.


Step 6: Launch, monitor, and iterate

Sub-step 6.1: Pre-launch checklist

Before activating:

  • Account session: Active
  • Daily limits: set to starting values (not maximum)
  • Working hours: configured in prospect's timezone
  • Delays: minimum 90 seconds configured
  • Prospect source: 200+ profiles loaded
  • Connection note: under 300 characters, includes personalisation variable
  • Sequence: 3 steps, distinct angles, delays set, Stop on Reply enabled
  • 24 hours since account first connected: complete (if new account)

Sub-step 6.2: Read Analytics after 48 hours

After 48 hours of active sending, check:

  • Requests sent: matches expected volume given daily limit and sending window
  • Acceptance rate: will be early-stage data but should show first accepts
  • Errors: any session errors or limit-reached messages require immediate investigation

After 2 weeks, calculate your week-1 and week-2 acceptance rates separately. Look for trend: is the rate improving (note is landing better as algorithm/warmup improves) or declining (account is generating restriction signals)?

Sub-step 6.3: Diagnose low acceptance rate

If week-2 acceptance rate is below 20%:

Possible causeDiagnostic checkFix
Note too genericRead the note without the variable filled inRewrite note with a new angle
ICP too broadReview profile samples from the prospect listAdd tighter filters to search URL
Prospect list includes people already connectedAimfox sends to all profiles in sourceApply "2nd connections only" filter
LinkedIn profile is incompleteCheck your profile from a logged-out browserAdd photo, headline, summary
Account sending to the same profiles multiple timesSearch URL not refreshedPause old campaign, create new with refreshed URL

Sub-step 6.4: Iterate based on data

After 4 weeks of data, you have enough to make a second-generation campaign:

  • Take the highest-performing note angle (by acceptance rate) and use it as the base
  • Tighten or expand ICP filters based on which accepted contacts actually replied
  • Adjust sequence timing if Message 1 reply rate is low (experiment with 12-hour vs. 24-hour delay)
  • A/B test the Message 3 ask phrasing if calls booked are below target

A campaign is not a fixed object. It is a starting hypothesis that data refines.

Benchmark: first data review at 48 hours to confirm sending is active. Week-2 acceptance rate calculated and compared to 25% target. Iteration decision made at 4-week mark.


Campaign architecture reference

ComponentCorrect configurationCommon mistake
Prospect sourceSpecific ICP filters, 2nd connections, industry + company sizeKeyword-only search, no filters
Daily limit10–20 (start); increase by 5 every 2 weeksStart at maximum; no ramp
Working hours8–9 AM to 5–6 PM prospect timezone, M–FDefault timezone (wrong market)
Delay between sends90–300 seconds random rangeNo delay configured
Connection noteSpecific context, no pitch, [firstName] variableGeneric opener, product pitch
Message 1 timing24–48 hours after acceptanceSend immediately on accept
Message 2 timing3–5 days after Message 1Next day after Message 1
Message 3 timing7–10 days after Message 2Next day after Message 2
Stop on ReplyEnabledDisabled (sends to repliers)
Acceptance rate target25%+ at week 2Not tracked
Reply rate target5%+ on Message 1Not tracked

Connection campaign configuration reference table

SettingLocation in AimfoxTarget valueNotes
Prospect source typeCampaign → SourceLinkedIn search URL or CSVCSV best for multichannel (Quarvio list)
Max prospects to pullCampaign → Source200–1,000 for first campaignToo many at low limits = months of send time
Daily connection limitAccount Settings → Limits10–20 (start)Increase by 5/2 weeks with no warnings
Daily message limitAccount Settings → Limits15–30 (start)Separate from connection limit
Working hours startAccount Settings → Hours8–9 AM prospect timezoneDon't use your timezone if different
Working hours endAccount Settings → Hours5–6 PM prospect timezoneClose the window before evening
Send delay minAccount Settings → Delays90 secondsNever set to 0
Send delay maxAccount Settings → Delays300 secondsWider range = more human-like
Connection noteCampaign → Message150–280 charactersUnder 300; includes [firstName]
Sequence stepsCampaign → Sequence3 stepsMore than 3 has diminishing returns
Step 1 delaySequence → Timing24–48 hoursNever send immediately
Step 2 delaySequence → Timing3–5 daysLong enough to feel like natural follow-up
Step 3 delaySequence → Timing7–10 daysNot too soon after step 2
Stop on ReplySequence → SettingsEnabledAlways on; prevent reply-continues
Unibox reply tagsUnibox → Tags5 standard categoriesSet before launch

Advanced tactics

Tactic 1: Run note vs. no-note A/B tests

Split your prospect list into two campaign variants: one sends with the connection note, one sends without. Apply the same ICP search URL, configure both campaigns with the same daily limit, and compare acceptance rates at 2 weeks. For many audiences, no-note requests from a well-optimised LinkedIn profile outperform a good note. Per Aimfox reviews on G2, this split test is one of the most-referenced optimisation steps from experienced users.

Tactic 2: Segment by seniority for different note angles

Directors and VPs respond to different note angles than individual contributors. Run separate campaigns with distinct notes for each seniority level rather than one note attempting to cover all levels. A VP-targeted note referencing organisational priorities differs from an IC-targeted note referencing day-to-day execution challenges.

Tactic 3: Use trigger events as note hooks

LinkedIn surfaces several trigger events that make personalisation more specific and authentic:

  • Job change: prospect just started a new role (visible on profile)
  • Company news: company recently raised funding or made an announcement
  • Post engagement: prospect recently posted about a topic in your domain

These triggers are not automated in Aimfox directly but can be used to build a targeted CSV list. Use LinkedIn notifications and Sales Navigator alerts to identify prospects with relevant recent events, build a CSV, and upload it as a campaign segment with a note that references the specific trigger.

Tactic 4: Build a warming campaign before pitching campaigns

Run a warming campaign that sends connection requests to your ICP with no follow-up pitch sequence. The goal is to build a large connected network in your target vertical, which increases your shared-connection count for future outreach. Future campaigns to second-degree contacts from your network appear warmer because you share mutual connections.

This takes 3–6 months but creates a long-term compounding effect: each new connection increases the shared-connection count for future campaigns to new prospects in the same network.

Tactic 5: Coordinate LinkedIn timing with cold email sends

For prospects in a multichannel campaign (LinkedIn + email from Instantly):

  1. Send LinkedIn connection request on Day 1
  2. Send first cold email on Day 3 (regardless of whether they have accepted yet)
  3. If they accept LinkedIn between Day 1 and Day 5, Aimfox triggers Message 1 sequence
  4. Cold email sequence continues on its own timeline

This creates a scenario where a prospect might receive your cold email and recognise your name from a recent LinkedIn connection request. The recognition reduces the cold email's perceived coldness and increases open and reply rates.

Tactic 6: Archive campaigns after prospect list exhaustion

When a campaign's prospect list is exhausted (Aimfox shows no more profiles to contact from the source), archive the campaign in Aimfox and create a new campaign with a refreshed search URL rather than attempting to re-add prospects to the same campaign. Fresh search URLs pull different profiles (especially from search results that include recently changed job titles or newly added LinkedIn members). Refreshing every 6–8 weeks maintains prospect list freshness.


Troubleshooting

Problem 1: Acceptance rate below 15% after 2 weeks

Symptom: analytics show 100+ connection requests sent but fewer than 15% accepted.

Likely causes (in order of frequency):

  1. Connection note is too generic or contains a pitch
  2. ICP search URL too broad (wrong industry, incorrect company size)
  3. LinkedIn profile is incomplete or does not convey relevant expertise
  4. Sending to third-degree connections (low social proximity)

Diagnostic approach: pull 10 randomly sampled profiles from the prospect list and read them manually. Do these people look like your exact ICP? If no, the targeting is too broad. If yes, the note is the problem. Check your LinkedIn profile from a logged-out browser — does it look like a credible professional in your space?

Fix: tighten ICP filters first (fastest impact), then revise the note angle if acceptance rate is still low after one more week.

Problem 2: Sequence messages not sending after connections accept

Symptom: prospects are accepting connections but no follow-up messages appear as sent in Analytics.

Cause 1: sequence is not activated on the campaign. Cause 2: Step 1 delay has not elapsed yet for recent accepts. Cause 3: the campaign was duplicated from another that had no sequence configured, and the sequence was not added to the new campaign.

Fix: navigate to the campaign's Sequence tab. Verify three steps are configured and the sequence status shows Active. If the delay for Step 1 is set to 48 hours, no messages will appear as sent until 48 hours after the first accepts.

Problem 3: Same prospect is receiving the connection request multiple times

Symptom: a prospect replies mentioning they have received multiple connection requests.

Cause: the prospect appears in multiple search URLs being used across different campaign segments, and separate campaigns are contacting the same profile.

Fix: use a single campaign per prospect rather than overlapping campaigns. If running multiple campaigns with different note angles, use an exclusion list (a CSV of LinkedIn URLs to skip). Contact the prospect directly to acknowledge the duplication and apologise.

Problem 4: Replies appearing in LinkedIn app but not in Unibox

Symptom: LinkedIn messages in the native app but Unibox shows nothing from that conversation thread.

Cause: the Aimfox LinkedIn session for that account has expired. Aimfox cannot sync messages from an account with an expired session.

Fix: check Account status. If it shows Session Error or Disconnected, reconnect the account. After reconnecting, allow 5–10 minutes for Unibox to sync missed messages.

Problem 5: Campaign pausing randomly mid-day

Symptom: campaign shows as Active but stops sending at unpredictable times during the configured working hours.

Cause 1: LinkedIn has sent a checkpoint verification challenge to the account. Aimfox pauses activity until the challenge is resolved. Cause 2: daily limit was reached earlier in the day than expected.

Fix: check the account for any pending verification. If the daily limit is being reached earlier than expected, reduce the per-session sending rate or reduce the daily limit to spread sends more evenly throughout the day.

Problem 6: Message 3 sending to a prospect who already replied

Symptom: a prospect received Message 3 even though they already responded to Message 1.

Cause: Stop on Reply was not enabled on the campaign.

Fix: enable Stop on Reply immediately in Campaign → Sequence Settings. Note: this fix does not retroactively undo messages already sent. Send a brief manual follow-up to the affected prospect: "Apologies for the duplicate — I see your earlier reply now."

Problem 7: Low reply rate on Message 1 despite good acceptance rate

Symptom: 30%+ acceptance rate but fewer than 3% reply rate on Message 1.

Cause: the connection note accepted prospects into your network but the follow-up message content does not deliver on the implicit promise of the note. Or, Message 1 is sent too soon (within hours of acceptance), which signals automation.

Fix: first, verify Message 1 delay is set to at least 24 hours. Then review the Message 1 content: is it a gentle introduction or an immediate pitch? Replace any pitch language with a genuine introduction and a light connection to what you work on.

Problem 8: Campaign running too slowly to be useful

Symptom: at current daily limits, it would take 6+ months to reach the full prospect list.

Cause: daily limits are set very conservatively relative to the size of the prospect list.

Fix: if the account has been running for 4+ weeks without restriction warnings, increase daily limits by 5 per week until reaching 25–30 connection requests per day (appropriate for accounts with stable outreach history). Per LinkedIn's official connection limit policy, LinkedIn's limits scale with account activity history, so gradual increase is the safe path to higher volume.


Community evidence

"Our acceptance rates went from 18% to 31% after two changes: tightening the ICP filter to 50–500 employee companies only (removed the giant enterprise contacts who never accept cold outreach) and changing the note angle from 'I help companies like yours' to a specific question about a challenge in their space. The Aimfox A/B test feature showed us clearly which note was winning."

— Verified G2 reviewer, agency founder, Aimfox reviews on G2

Reddit thread from r/sales (412 upvotes): LinkedIn acceptance rate debate. Highest-voted comment:

"Note vs no-note is the wrong question. The right question is: is your profile good enough to stand alone? If your LinkedIn profile clearly shows who you help, with relevant experience and a real photo, no-note can outperform a good note because the profile does all the work. The note only helps when it adds context the profile cannot provide."

— Comment with 412 upvotes, r/sales thread on LinkedIn connection request optimisation

Per Instantly's cold email benchmarks: adding LinkedIn outreach to an existing cold email campaign increases total reply rates 40–60% compared to email alone.


Our actual stack

NeedToolNotes
Verified B2B contacts with LinkedIn URLsQuarvioFrom $129/5k; one-time purchase
Email infrastructureInframailMicrosoft 365 inboxes, auto DNS
Cold email sequencesInstantlyParallel to Aimfox LinkedIn layer
LinkedIn connection campaignsAimfoxConnection + sequence + Unibox

Frequently asked questions

What is a healthy acceptance rate for LinkedIn connection campaigns?

For targeted outreach with a relevant ICP and a well-written note, 25–35% is healthy. Below 20% indicates a targeting or note problem that should be diagnosed before continuing. Above 40% suggests either exceptional note quality or that your ICP has unusually high LinkedIn acceptance behaviour (common for certain junior roles that connect liberally).

Should I send connection requests with a note or without?

Test both before committing. Run a split campaign: 50 requests with note, 50 without. Compare acceptance rates at 2 weeks. For many audiences, no-note outperforms a generic note. For audiences where personalisation signals effort (senior executives, specific role contexts), a well-written note outperforms no note. The result varies by ICP.

How many follow-up messages should I send after a connection accepts?

Three is the standard. Step 4 (a very light check-in message) is optional and has lower incremental value. Beyond 4 messages, response rates drop sharply and the campaign risks being flagged as spammy, which can result in the prospect reporting the messages.

Can I run multiple campaigns at the same time from one LinkedIn account?

Yes. Aimfox allows multiple active campaigns per connected account. The daily limit applies to the account in aggregate, not per campaign. Configure each campaign with a per-campaign daily cap to ensure the sum of all campaign sends does not exceed your account-level safe limit.

What happens if a prospect accepts but I have run out of follow-up capacity?

Aimfox processes sequence triggers as accepts come in, according to your configured delays. If the account daily message limit is reached before all pending Step 1 messages are sent, remaining Step 1 messages queue and send on the next business day within working hours. This is normal behavior and does not affect campaign performance.

How do I handle a prospect who replies asking to be removed from outreach?

Reply promptly thanking them and confirming you have removed them. In Aimfox, tag the conversation as "Unsubscribe" in Unibox. This stops the sequence for that contact and creates an audit trail. If the prospect is in your CRM, mark them as Do Not Contact.

How often should I refresh the prospect search URL?

Every 4–8 weeks. LinkedIn search results change as prospects change jobs, update profiles, and enter or leave your network. Refreshing the URL pulls new profiles that have become relevant since the last campaign ran on that search.

What is the maximum number of connection requests I can send per week safely?

Per LinkedIn's official connection limit policy, LinkedIn limits vary by account. A common community-verified guideline is 100–150 requests per week for established accounts. Aimfox's default starting configuration is well below this. Ramp gradually and monitor for restriction signals.

Can I reuse the same follow-up message sequence across multiple campaigns?

Yes. Aimfox allows sequence duplication across campaigns. However, if campaigns are targeting different ICP segments, consider whether the same messages are optimal for both. A sequence written for VP-level prospects may not perform as well for Director-level prospects who have different pain points and communication styles.

How do I know which campaign is generating booked calls?

Tag Unibox conversations with "Call booked" when a prospect agrees to a call. Track which campaign the prospect came from using Aimfox's campaign filter in Unibox. Over time, this attribution data shows which campaigns are generating the most downstream value.

Is it safe to run Aimfox continuously 5 days a week?

Yes, if configured correctly. The working hours setting restricts Aimfox to business hours, and the daily limits keep volume consistent. Consistent 5-day/week activity at the same volume range is more aligned with human LinkedIn behaviour than running for 2 days at high volume and pausing for 5. Consistency is a safety signal, not a risk signal.

What contact data do I need before running a LinkedIn campaign?

At minimum, you need LinkedIn profile URLs for your ICP. If running a multichannel campaign (LinkedIn + cold email), you also need verified business email addresses. Quarvio provides both — contact lists include LinkedIn URLs and verified business emails, filterable by job title, company size, industry, and geography, from $129 for 5,000 contacts.


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