Definition
What is signal-based outbound?
It is outbound that waits for a reason. Instead of messaging a list of strangers who match a job title, you message the people who just did something that suggests they might buy.
On this page 6 sections
The short answer
Signal-based outbound is a B2B prospecting method where you only reach out to a prospect after they show a buying signal, such as viewing your profile, engaging with your posts or a competitor's, visiting your website, starting a new job, hiring for a relevant role or raising money. Because the outreach is timed to something the prospect actually did, it gets far more replies than cold outbound sent to a static list.
The idea in one sentence: timing beats copy.
Most outbound fails for a boring reason. The message is fine, the person is a fit, and they still ignore it, because it reached them on a day they were not thinking about the problem at all.
A buying signal is evidence that today is not that day. Someone who looked at your profile this morning, liked a post about the problem you solve, or just started as Head of Sales at a company that is hiring three SDRs is already thinking about it. Signal-based outbound moves your effort from "who fits" to "who fits and is moving right now."
Signal-based outbound has three parts, and most teams only do the first.
Notice the move
Capture the people doing something that matters: viewing, engaging, following, visiting, hiring, changing jobs, raising.
Throw most of them out
A signal from someone outside your ICP is noise. Score every person against who you actually sell to, and keep the top slice.
Write like you noticed
Research the person and write something specific to them, sent while the signal is fresh. Not a template with their name in it.
Tools that only do part one hand you a dashboard of "342 profile views this week" and leave you to work out what to do with it. That is why plenty of teams try signals once and quietly go back to cold lists. The value is in all three parts running together, every day.
Why it works better than cold outbound.
Same copy, same channel, same person. The only thing that changes is when you reach them.
Source: Valley's 2025 data across 7.3 million prospects. Signal campaigns out-replied cold in every segment measured.
There is a second reason, and it gets more important every year: LinkedIn rations your connection requests. With a cap of roughly 100 to 200 invites a week per account, you cannot afford to spend them on people who were never going to answer. Signals tell you where to spend them.
What counts as a buying signal?
Anything a prospect does that makes them more likely to buy now than they were last month. They fall into three groups, from strongest to weakest:
- First-party signals: they interacted with you. Profile viewers, post engagers, page followers, website visitors, people who started a signup and stopped.
- Borrowed signals: they interacted with someone like you. Competitor followers, people engaging with a competitor's posts, audiences of creators in your space.
- Trigger events: something changed at their company. A new job, a new leader, hiring for a role you help with, a funding round.
The full list, what each one means and how fast it expires, is on the signals page, and every term is defined in the glossary.
What signal-based outbound is not.
- It is not "I saw you viewed my profile." You use the signal to pick who and when. You almost never mention it. See the playbook for how to write the message.
- It is not a volume play. Your list gets smaller, not bigger. Fewer, better conversations is the whole point.
- It is not intent data you buy and forget. A signal is worth most in the first day or two. A weekly CSV of "companies researching your category" is a different, much weaker thing (here is the difference).
How to start this week.
If you want to see it before you try it, start with nine worked examples.
- Pick the two strongest signals you already own: your profile viewers and the people who engage with your posts.
- Add one borrowed signal: the people engaging with your biggest competitor's posts.
- Write down your ICP in one paragraph, and drop anyone who doesn't fit it.
- Message the rest within 48 hours of the signal, about their problem, not about the signal.
Doing that by hand takes about an hour a day. Valley does the capturing, qualifying, research and drafting, and you approve what goes out.
