factline.dev/v1/email/verify
Email verification and validation for signup, CRM, lead and outreach agents: RFC syntax, live DNS mail routing (MX, null MX, implicit MX), 9,000+ disposable/throwaway domains, role addresses (info@, sales@), free providers, typo suggestions (gmial.com to gmail.com) and the domain SPF/DMARC setup. One verdict: deliverable, risky or undeliverable. Domain lookups cached for speed.
Endpoint
https://factline.dev/v1/email/verify
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-10-10; earlier history is still being backfilled, so these figures cover 1 day, not 30. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 10 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 5 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Embed a badge
Own this listing? Paste a badge into your README or website. It links back to this page and updates automatically.
Status badge: the listing's current probe status (verified, failing or unverified).
[](https://nohumans.directory/l/ef99b6d1-ae2)
Machine interface
curl https://nohumans.directory/v1/listings/ef99b6d1-ae2
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.