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Key Findings
Signal-based outbound consistently outperforms static list campaigns by 3x to 5x on reply rates. The reason is simple: you are reaching people when your message is relevant to something happening in their world right now, not just when your sequence fires.
The best signals are not always the most obvious ones. Funding rounds get all the attention. But a new leadership hire, a LinkedIn post about a specific pain, or a tech adoption signal often converts better because fewer people are acting on them.
Automation is what makes signal-based outbound scalable. Without Clay and Trigify running continuously in the background, signal monitoring becomes a full-time manual job. The system needs to run 24/7 without a human watching it.
Signal-based outbound does not replace good copy or a tight ICP. It amplifies both. A well-timed message with weak positioning still loses. The signal gets you in the door. The copy and the offer close it.
In APAC markets, signal-based outreach has an even bigger edge because fewer agencies are running it. The bar for relevance is lower, inbox competition is lower, and the timing advantage compounds faster.
Most B2B outbound still works the same way it did in 2018. Build a list, write an email, blast it to everyone, follow up twice, move on. The reply rates are what you would expect: 1 to 3% if you are lucky.
Signal-based outbound is a different approach entirely. Instead of reaching out based on who someone is, you reach out based on what just happened to them. A funding round. A new hire. A LinkedIn post about a problem you solve. Something that makes your message relevant right now, at this specific moment in their company's life.
This is not a new concept. The best sales teams have always tried to reach prospects at the right moment. What is new is that the tooling now makes it possible to do this at scale, automatically, across hundreds of target accounts at once.
At Reachly, every campaign we run is signal-based. It is the core of how we book meetings for clients across APAC. This guide covers exactly what it is, why it works, the 12 signals we actually monitor, and how the automation stack fits together.
What is signal-based outbound?
Signal-based outbound is a B2B prospecting approach where you only reach out to a prospect when a meaningful trigger indicates that your message is relevant to their situation right now.
Traditional outbound identifies the right person (ICP matching) and then reaches out based on a schedule. Signal-based outbound adds a third dimension: timing. You still need the right person. But you wait for the right moment before you contact them.
That moment is defined by a signal. A signal is any observable event that suggests a prospect might be open to your offer. It could be something that happened at the company level, like a funding announcement or a leadership change. Or it could be something at the individual level, like a LinkedIn post about a challenge you help with or a visit to your website.
The result is outreach that does not feel cold. It feels like someone smart noticed something and reached out with something useful. Because functionally, that is exactly what happened.
Why signal-based outbound works
Static list campaigns fail for a predictable reason: they treat all contacts as equally ready to buy at all times. They are not. B2B buying decisions are driven by internal triggers. A company starts looking for a new solution when something changes. A new leader comes in. A project fails. A competitor is adopted by their biggest customer. Budget opens up after a raise.
Signal-based outbound aligns your outreach with those triggers. When you reach a prospect within 48 to 72 hours of a meaningful event, three things happen:
Static lists also decay fast. Up to 30% of B2B contacts change roles or companies every year. A list you built six months ago is already partially broken. Signal-based flows solve this because they draw from live data continuously. You are always reaching the right person at the right moment, not who they were when you built the list.
The 12 signals Reachly monitors in every campaign
Not all signals are equal. Some indicate that a company is growing and might need your service soon. Others indicate that a specific person is actively experiencing a pain you solve right now. We split them into company-level signals and person-level signals.
Company-level signals
These signals tell you something has changed at the organisation that makes your offer more relevant. They are broader but often indicate a major shift in buying readiness.
Person-level signals
These signals tell you something specific has changed for an individual decision-maker. They are often higher converting because the relevance is personal, not just organisation
How to monitor signals: the Reachly workflow
Knowing which signals to look for is one thing. Monitoring them continuously across hundreds of target accounts without a full-time person watching it is another. This is where the tooling makes or breaks the approach.
Here is the exact workflow we run at Reachly using Clay and Trigify:
What a signal-triggered sequence looks like
Here is the standard Reachly sequence that fires when a signal is detected. Every touchpoint references the signal directly or indirectly.
All touchpoints are logged. When a prospect replies at any stage, they exit the sequence automatically. No manual management. No awkward follow-ups after someone books a call.
The tool stack that makes it work
Signal-based outbound at scale requires tools that talk to each other. Here is what we use at Reachly and why each tool earns its place in the workflow.
Signal-based vs traditional outbound: side by side
Signal-based outbound in APAC: the edge is bigger here
Most signal-based outbound content is written for the US market. In APAC, the opportunity is significantly larger for two reasons.
First, inbox competition is lower. Most companies expanding into APAC are still running basic cold email campaigns from static lists. The bar for standing out is lower than in the US, which means a well-timed, signal-driven message has an even bigger relative advantage.
Second, APAC expansion signals are particularly powerful. When a company announces it is entering Singapore, expanding from Australia into Southeast Asia, or hiring a first country manager for Thailand, that is a specific, high-intent signal that almost no competitor is acting on quickly. Reachly operates from Bangkok with a regional APAC focus specifically because we see those signals first and act on them fastest.
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