Signal-Based Prospecting: The Playbook Behind 3× LinkedIn Reply Rates

Chris — Founder, Reachy ·

Two prospect lists, same product, same message quality. List A: “VP Sales at SaaS companies, 50–200 employees.” List B: “People who commented on a competitor’s launch post this week.” List B replies up to 3× more often. That gap is the entire thesis of signal-based prospecting.

Why titles underperform

A job title tells you someone could buy. It says nothing about whether they’re thinking about the problem right now. Title-based lists mix three populations: people in-market, people happy with a competitor, and people who haven’t thought about the category in years. Your reply rate is the average of all three.

What counts as a signal

A signal is public evidence of current interest. The ones that work hardest on LinkedIn:

  • Post engagement — people who liked or commented on a post about your problem space (a competitor’s launch, an industry hot take, a how-to thread)
  • Group membership — they joined a community dedicated to the problem
  • Creator followers — they follow the influencer your buyers read
  • Event attendees — they gave up an hour for a webinar on the topic
  • Slack communities — the highest-intent watering holes in B2B
  • Job changes & hiring — new decision-maker, or a team staffing up around the problem

The playbook

1. Pick one signal, not one persona

Start from the moment of intent: “everyone who engaged with X” — then filter down with demographics (role, geography, company size). Reachy does this natively: point it at a post, group, creator or Slack community, and refine from there.

2. Reference the signal in the first line

The signal is your opener — it’s why this isn’t a cold message:

“Saw your comment on [post] about pipeline coverage — curious how you’re handling that at [company].”

No “I hope this finds you well.” The signal is the personalization.

3. Score before you send

Not everyone who liked a post fits your ICP. Score each contact against your ideal profile and message the top of the list first. (Reachy’s lead scoring does this automatically — it’s why the funnel shows a “good fit” stage before “contacted”.)

4. Sequence lightly

Signal-sourced prospects don’t need a 7-touch guilt trip. Initial message + two follow-ups, three days apart, then stop. High-intent lists convert early or not at all.

What to expect

Benchmarks from campaigns run in Reachy:

List sourceAccept rateReply rate
Title-only search20–30%5–10%
Signal-based list40–55%20–35%

Higher acceptance also keeps your account healthier — LinkedIn reads a well-accepted account as a well-behaved one, which matters for staying within safe limits.

Next step

Reachy prioritizes signal-sourced contacts out of the box — point it at a post, a group, or a Slack community and it builds, scores and works the list from your machine. Download it free and run your first signal campaign today.