How to Build an ICP Your SDR Team Can Actually Sell Into

When a new client tells us their ICP is "mid-market SaaS companies", we know we have work to do. That description matches roughly 40,000 accounts. No outbound team can write personalized sequences against a list that broad — and even if they could, the reply rates would be miserable because the offer wouldn't fit half of them.

A useful ICP is sharp enough that two people on your team would build the same target list from it. Here are the five questions we ask in every kickoff workshop to get there.

1. Which existing customers are you happy to keep?

Pull a list of customers with above-average retention, expansion, or NPS. Ignore the logos you closed but regret. Look for the patterns inside the keepers: company size, vertical, the role of your champion, the specific pain that opened the door.

2. What had to be true for the deal to close in under 90 days?

Look at your fastest 10–15 closed-won deals. The buying triggers behind those deals tend to repeat — a new VP, a recent funding round, a competitor losing favor, a compliance deadline. Those triggers become your outbound signals.

3. Who actually signs?

Champion ≠ buyer. Map the title that signed the contract, not the person who first replied to your email. If the VP of Engineering champions but the CFO signs, your outreach has to land in both inboxes — and the messaging needs to speak to both audiences.

4. What disqualifies a company immediately?

Anti-criteria are as important as criteria. Wrong tech stack, wrong region, wrong company stage, wrong business model — write them down. We exclude an average of 30–40% of any source list before personalization even starts.

5. Where does this account live in public data?

An ICP is only useful if you can find the accounts that fit it. Translate every criterion into a filter you can actually run — funding stage in Crunchbase, headcount in LinkedIn Sales Nav, tech stack in BuiltWith, hiring patterns in Greenhouse, and so on. If a criterion has no public signal, drop it or replace it.

The output: a one-page ICP brief

Compress all of this into a single page — sometimes called an "account scorecard." When your researchers, copywriters, and SDRs all work from the same one-pager, your campaigns get sharper and faster, and your reply rates climb without changing a single line of copy.

“If your ICP fits more than 1,000 logos, it's not an ICP — it's a market. Pick the 200 you most want to win and build the campaign for them.”