They just closed the round.
The 60 days after a funding announcement are the highest reply-rate window in B2B outbound. Most founders miss them because they are still working a cold list.
8-minute read · 1 anatomy table · 1 sequence template · 1 worked example
The cold list stopped working. The moment still does.
If you are a founder selling into other founders, the data you have on cold outbound right now is bleak. Reply rates that used to clear five percent two years ago now sit at one to two on a clean list, even with the infrastructure perfectly tuned. The bottleneck is not deliverability. The bottleneck is that the median founder inbox receives roughly 120 to 180 cold pitches a month, most of them generated by AI, all of them indistinguishable, and the recipient has learned to archive every one of them without reading.
The cold list, the move that defined B2B outbound from 2018 to 2023, has compressed to baseline. Buying a list, blasting a sequence, and waiting for one in five hundred to convert is no longer a motion. It is an expense.
What still works is the opposite move. Instead of starting from a list and praying for intent, start from the intent and work backwards to a list of one. Find the company at the precise moment they have decided to buy something in your category, and show up before anyone else does. Of the dozen or so reliable buying-moment signals in B2B, the one with the highest signal-to-noise ratio is the funding announcement.
A company that just closed a round has two things they did not have last week: a deployable budget and a public hiring goal. The CEO is under pressure to show velocity, the next press cycle is already being scheduled, and every operational priority on the deck they raised against is now on the calendar. Roughly 60 to 90 days after the round closes is when the bulk of the planned vendor decisions get made. After day 120 the budget is spoken for and the company has settled into its next twelve-month rhythm.
The play, then, is simple to describe and hard to execute well: catch the announcement, get into the inbox of the right person within 24 to 72 hours of the news, and reference the specific thing they just told the world they are about to do. The rest of this page is the anatomy of that signal, a sequence that has been working for the teams we watch, the composite case study of a service that ran the entire business off this single play, and what it costs to run.
Not every round is your round.
The first instinct a lot of teams have when they discover this play is to fire outreach at every announcement. That is a mistake. The signal decays sharply by stage, sector fit, and recency, and an unfiltered fire-hose burns out your sender reputation before it produces meetings. The teams that run this play well treat it as a filtered, scored feed.
The bands below are the calibration we recommend to founders who are sizing this play against their own ICP. The reply-rate column reflects what teams running founder-written outreach see in the wild. The ACV column reflects the typical deal economics that follow when the play works.
| Round | Buying window | Reply rate band | Typical ACV |
|---|---|---|---|
| Seed / Pre-Seed | 30 to 60 days | 8 to 14% | $2 to 8K |
| Series A | 60 to 90 days | 14 to 22% | $10 to 50K |
| Series B | 45 to 75 days | 12 to 20% | $25 to 150K |
| Series C | 45 to 60 days | 8 to 16% | $50 to 300K |
| Series D+ / Growth | 30 to 45 days | 6 to 12% | $100K+ |
| Bridge / Extension | 15 to 30 days | 4 to 8% | Stage-dependent |
Two patterns hold across the table. First, the buying window is widest at Series A and B, which is also where the median Allston customer concentrates. Second, the reply rate compresses as the round size grows, because larger-round companies are inundated with vendor pitches and the open-rate ceiling is harder. The sweet spot for most B2B sellers selling tools or services to other B2B teams is Series A through B, hit within the first 14 days.
Bridge and extension rounds deserve their own note. They look like funding announcements but they read very differently inside the company. A bridge round usually means the next priced round is harder than expected, and the team is conserving cash, not deploying it. The signal is not the same shape; treat it as roughly half the buying intent of a clean primary round, and lead with help, not pitch.
Reference the round. Reference the plan. Get out of the way.
The structural reason funding-triggered outreach outperforms is that the personalization writes itself. Every announcement names the amount, the lead investor, and at least one operational priority. Most also name the headcount goal. Three sentences into the email and you have already cited four data points that no spray-and-pray vendor would have.
The sequence below is the shape that has been holding up across post-raise campaigns the teams we work with run. Three touches, eight days, then stop. Past day 14 the inbox is overwhelmed; past day 60 the buying window has closed. There is no benefit to grinding.
Two things to flag on this template. First, the line about not pinging again matters. The breakup email is consistently the highest-reply touch in the sequence, but only when it actually reads as a breakup. If the email is shaped like a fourth pitch, the reader notices and discards it.
Second, the writeup at the end has to be real and has to be useful. A link to a generic landing page reads as exactly what it is. A link to a 600-word writeup of what three other founders in their shape actually did in the same window reads as a peer sharing a pattern. The asset is the thing that earns the reply if the play is going to earn it.
From zero to 2M ARR on a single signal.
Composite drawn from managed-service teams we have observed running this play over the past two years. Numbers and arc are typical of what the play can do when it is the primary motion. Specifics are anonymized.
The team was a two-person founding crew running a managed cold-email service. They had been targeting Series A B2B SaaS founders out of a hand-built list for six months and getting reply rates in the 3 to 4 percent range. Their offer was strong, their infrastructure was clean, and their pipeline was not growing. The list was the bottleneck, not the offer.
They flipped the motion. Instead of starting from a list, they started from the announcements. A morning pull of every US Series A B2B SaaS funding announcement from the prior 24 hours, filtered down to roughly 6 to 12 companies a day. Each company got founder-written outreach within 36 hours of the news hitting TechCrunch, citing the round, the lead investor, and the hiring plan in the first three lines. Three-touch sequence, eight days, stop.
The reply rate on the first touch landed at 18 percent across the first 60 days of the experiment. One in six replies converted to a paid pilot, then one in three pilots converted to a recurring engagement. By month six the post-raise feed was driving roughly 70 percent of all new pipeline. By month 14 the business was at 2.1 million ARR, run by the two founders plus one ops hire, with the post-raise signal still the only outbound motion.
What did the cold-list comparison look like in the same period? The team kept the cold motion running for one quarter as a control. It produced 11 percent of the meetings, 4 percent of the closed-won revenue, and consumed roughly the same operating hours. They turned it off in month nine. The post-raise signal was not a multiplier on the old motion. It was a replacement.
The work is unglamorous. We do it full-time.
The reason most founders do not run this play well is not that it is hard to understand. It is that running it well requires somebody to wake up every morning, read the announcements, filter them against an ICP, enrich the prospects within an hour, write specific outreach, send it from a warmed sender, and handle the replies as they come in. None of that is rocket science. All of it has to happen every day, including the days the founder is in a board meeting.
That is the work we end up doing for the teams that hire us on this play. We free up the founder to keep selling at the high end and to keep building the product, while the post-raise machine runs underneath. Four stages, repeated weekly, indefinitely:
Signal feed + ICP filter
We stand up the morning pull from Crunchbase, TechCrunch, Axios Pro Rata, and three or four sector-specific newsletters. Filter down to the rounds that fit your ICP, deduplicate, and queue them for enrichment by 9 AM local.
Same-hour enrichment
Founder email, LinkedIn, and the named hiring plan extracted within the hour. The personalization layer is the announcement itself; we structure it so the sender does not have to think about it.
Outreach in your voice, under your domain
Three-touch sequence sent from your warmed sending infrastructure, written in your voice with your offer. We draft, you sign off on the first ten, then we run.
Weekly reply review
30-minute weekly call with the reply data, what is converting, what is not, and a tightened ICP filter for the coming week. The play tunes itself if you let it.
The first conversation is short. You tell us who you sell to, we tell you what the post-raise pipeline against that ICP probably looks like, and you decide whether to run it. We will not pitch you on the call.
Tell us your ICP. We will tell you the pipeline.
We will pull a sample week of post-raise rounds against your ICP filter, send you the list, and walk through what the reply data on a similar shape has looked like for other founders. If the pipeline is real, we can talk about running it. If it is not, you have lost 20 minutes and gained a sample dataset.
Book the sizing call →Free for founders. We will send the sample list whether or not you decide to engage.