Chrome Extension for LinkedIn Outreach

Find the right reason
to reach out

FirstLine analyzes LinkedIn profiles, finds relevant signals, and generates short outreach messages that actually sound like you wrote them.

Get Early Access See How It Works
FirstLine
Sarah Chen
Head of Sales at Datadog | Ex-Salesforce
✓
New Head of Sales — likely revisiting tooling and process
career move
✓
Salesforce + Datadog background = scaling enterprise GTM
expertise signal
Approach
new role, new stack
Initial message
Sarah — new Head of Sales at Datadog? We help sales teams keep demos from breaking mid-call. Worth 15 min?
Follow-up
Coming from Salesforce to Datadog, curious if your SDR team's outreach is keeping up with growth. We help personalize at scale.
The problem

Cold outreach is broken

You either spend hours researching and writing personalized LinkedIn messages — or you use AI tools that produce messages everyone ignores.

⏱

Manual outreach eats your day

Researching each prospect, finding an angle, writing a message from scratch. Multiply that by 30 people a day. The math doesn't work.

🚫

Generic AI messages get ignored

Most AI outreach tools just generate text. No research, no context, no real reason to reach out. Recipients can tell instantly.

How it works

Context first. Message second.

FirstLine thinks before it writes. That's why the messages sound real.

1

Open a profile

Visit any LinkedIn profile page

2

Find signals

FirstLine identifies real reasons to reach out

3

Choose approach

Select the angle that fits your goal

4

Get your message

Short, personal, ready to send

Why FirstLine

Outreach that starts with understanding

🎯

Finds the reason to reach out

Surfaces signals like role changes, stated priorities, and expertise patterns — not just job titles.

✍

Messages that sound human

2-4 sentences. Under 50 words. No generic templates. No "I came across your profile." Just sharp, personal outreach.

⚡

Works for sales, recruiting, and founders

Different roles need different approaches. FirstLine adapts its insights, tone, and goals to how you actually work.

Not another AI message generator

Most tools write first.
FirstLine thinks first.

The difference between a reply and silence is context — not copywriting.

Generic AI tools
  • Generate text immediately
  • No profile analysis
  • Same template, different name
  • 70+ words, sounds like AI
FirstLine
  • Finds signals before writing
  • Chooses the best approach
  • Adapts to your role and goal
  • Under 50 words, sounds human
Chrome Extension
Works inside LinkedIn
Built for SDRs, founders, and recruiters
No auto-sending

Ready to stop guessing?

Join early access and start writing outreach that actually gets replies.

Get Early Access
FAQ

Common questions

Yes. FirstLine is a Chrome extension that adds a side panel directly inside LinkedIn. No switching tabs, no copy-pasting between tools. You open a profile, click the button, and get your message right there.
No. FirstLine generates personalized messages for you to review, edit, and send yourself. You stay in full control of every LinkedIn interaction. We don't automate sending — that's how accounts get banned.
SDRs and account executives doing cold outreach, recruiters sourcing passive candidates on LinkedIn, and founders doing manual outbound for their startups. Anyone who writes LinkedIn messages and wants them to actually get replies.
ChatGPT generates text from a blank prompt. FirstLine reads the LinkedIn profile first, finds specific reasons to reach out, picks the best approach, and then writes a short message grounded in real context. The result sounds like you did the research — because the AI actually did.
2-4 sentences, under 50 words. Short enough to read in 5 seconds on a phone screen. We intentionally keep messages short because that's what gets replies on LinkedIn — not long pitches.
Early access is free. We'll introduce a Pro plan later with unlimited usage, but early users will get special pricing. Sign up below to get in.
Get in touch

Join early access or send feedback

Questions, ideas, bugs — we want to hear it all.