How to Add LinkedIn Leads to a Lemlist Campaign

The bottleneck in LinkedIn-to-Lemlist outreach is not importing the leads. It is the roughly 20 connection invites a day LinkedIn lets a lemlist sequence fire before your account is worth protecting more carefully. You can push 2,500 Sales Navigator leads into a campaign in one click, then watch them drip out for months.

Quick answer: add LinkedIn leads to a Lemlist campaign with the lemlist Chrome extension, which pushes a profile or a full search into a chosen campaign and pulls verified data at the same time. To run the import plus the email-and-LinkedIn sequence without touching the extension each day, hand it to a Simular AI computer agent that operates both real interfaces for you.

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Manual vs. Simular vs. the lemlist extension, at a glance

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Which method should you use?

• A one-off list under 50 leads: export or copy to a CSV and upload it. The setup is not worth it.
• You are at your desk and push lists a few times a week: the lemlist Chrome extension. It is the fastest sanctioned import and enriches emails as it goes.
• Recurring imports you would rather not babysit: a Simular AI computer agent. It reads your saved searches and refills campaigns on its own VM.

A founder building a 300-lead round of outreach, an agency loading a client's Sales Navigator list, and an SDR topping up a campaign every Monday all run the same import. Only the cadence and the personalization change.

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Method 1: Build a CSV by hand and upload it

Collect the fields yourself, drop them in a spreadsheet, and import the file into your campaign. Zero extension, full control, but the slowest path.

1. Open each LinkedIn profile and copy the name, title, company, location, and profile URL into columns.
2. Add an email column; verify addresses before you send so bounces do not hurt deliverability.
3. In Lemlist, open the campaign, choose Import leads, upload the CSV, and match each column to a personalization variable.
4. Set the duplicate rule so leads already in the campaign are skipped.

Pros: free, no tools, works for any list. Cons: copying fields runs about 2 to 3 minutes per profile, so 100 leads costs 3 to 4 hours, and hand-typed data carries typos. A LinkedIn search also caps at 1,000 results, and Sales Navigator at 2,500, so segment broad audiences into narrower targeted prospect lists before you export.

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Method 2: Hand it to a Simular AI computer agent (the automated path we recommend)

Instead of copy-pasting or clicking the extension yourself, you show a Simular agent the import once and it repeats the whole cycle across both real interfaces.

1. Point it at a search. Describe your target, for example "heads of RevOps at Series B SaaS," and let the agent open the LinkedIn or Sales Navigator search.
2. Read the rows. It reads each lead's name, title, company, and profile URL directly from the screen, the same fields you would copy by hand.
3. Import into Lemlist. It opens your campaign, pushes the leads in, and maps each field to the right variable so {{firstName}} and {{companyName}} resolve cleanly.
4. Pause for review. It stops for your sign-off on the list and the sending pace before any LinkedIn or email step fires.

Because the agent drives the actual Lemlist and LinkedIn screens on a private cloud VM, it needs no extension on your machine, no lemlist API key, and no Zapier wiring. It runs at a human pace inside the daily action limits and keeps you in the loop, so consent and volume stay under your control. More on the Sai page, and the team behind it.

Pros: hands-off recurring imports, clean field mapping, no local extension. Cons: a subscription, plus 15 minutes up front to teach it your routine.

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Method 3: The lemlist Chrome extension and native import

The lemlist Chrome extension is the official one-click import, pulling verified contact data as it pushes leads into a campaign.

1. Install the extension and log in, per the lemlist setup guide.
2. For a single lead, open the profile, click Add to campaign, choose the campaign, and click Push to campaign.
3. For a search, click Add profile(s) to lemlist, then Push all to campaign, up to 999 LinkedIn or 2,500 Sales Navigator leads at once.
4. Add your LinkedIn steps to the sequence: profile visit, connection invite, chat message, or voice message.

Pros: fast, sanctioned, enriches emails automatically. Cons: you have to be at your desk running it, chat messages only reach 1st-degree connections, and every LinkedIn step counts against your daily limits.

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Why the daily limits, not the import, decide your throughput

Lemlist meters LinkedIn activity because LinkedIn watches action velocity, not the tool doing it. The default caps sit near 20 connection invites, 30 messages, and 30 profile visits a day, about 100 actions total, and lemlist tells you to start low and raise them slowly. Push past that and you risk a soft restriction long before an outright ban.

Pro tactics that keep campaigns flowing:

• Segment your import. Split a 2,500-lead Sales Navigator list into themed campaigns so each has its own tuned message, instead of one generic blast.
• Order the sequence right. Put the connection invite before any chat message, because lemlist can only message 1st-degree connections.
• Ramp custom notes carefully. LinkedIn limits invites that carry a personal note, and notes cap at 200 characters, so reserve them for your best-fit leads.
• Verify emails before sending. A LinkedIn profile is not an email; check addresses so bounces do not sink deliverability, and honor CAN-SPAM opt-out rules on every cold send.

The mistakes that stall campaigns are consistent: importing 2,500 leads and cranking the daily limits to clear them fast, messaging people before connecting, and skipping email verification. Practitioners on outreach forums repeat the same lesson, that a slow, personalized ramp beats a fast burn that gets the account flagged.

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A 2,500-lead Sales Navigator import sounds huge, but at lemlist's default 20 connection invites a day, the LinkedIn steps alone take about 125 days to clear one campaign. Volume lives in the sequence pacing, not the import button. Derived estimate.

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Key takeaways

• The lemlist Chrome extension is the fastest sanctioned import: up to 999 LinkedIn or 2,500 Sales Navigator leads per campaign.
• Throughput is capped by LinkedIn daily limits, near 20 invites and 30 messages a day, not by import size.
• Order the connection invite before any chat message, since lemlist only messages 1st-degree connections.
• For hands-off recurring imports, a Simular agent reads your searches and refills campaigns without a local extension.

The winning pattern: build one well-segmented campaign with tight personalization variables, respect the daily limits, and let a Sai agent read your LinkedIn searches and refill it on its own VM so your pipeline stays fed while you focus on the replies. Pair it with a plan to safely auto-invite on LinkedIn at scale and to find emails from LinkedIn before the first send.