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What the data says

Which tools can verify an email address is deliverable?

The short answer

15 products in this directory are tagged with this job. 11 of the 15 tagged entries have an official MCP server and 3 have a community one, so an agent can call 14 of them directly. 14 are reachable by one person without a contract. Counted 2026-08-25.

Verification is the step between finding an address and sending to it, and skipping it is how a sending domain gets burned. It is also the cheapest step in the chain to automate properly, because the answer is a boolean and the cost of being wrong is asymmetric.

The numbers, generated at build time

MeasureCount Of what
Entries tagged verify-email-deliverable15 of 293 directory entries
Distinct products15 the rest are cross listings
Official MCP server11vendor built and maintained
Community MCP server3built by somebody else
No server found1 on the date each entry was checked
Free to start6no payment, no sales call
Solo reachable14 free or paid self serve
Bench tested0 somebody here actually ran it

The ones with an official MCP server

The ones with a free tier

What this list is not

It is not a ranking and it is not a recommendation. A job tag means the vendor says the tool does this. Nobody here has run any of them: 0 tools in this directory are bench tested. Two tools on the same list can be wildly different in coverage, price and quality, and this directory does not claim to know which.

Sources

Every number on this page is generated from directory.json at build time and carries the date it was baked: 2026-08-25. Nothing is typed by hand, nothing is rounded, and nothing is estimated. The underlying data is published in full. Where the honest answer is a zero, the zero is printed.

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