Trumailo - Realtime Email Verification - Eight checks. Ten milliseconds.

Hi Hunters, We built Trumailo because we got tired of guessing. A few months ago we ran a campaign to ~14,000 addresses collected through legitimate signups. 2,100 bounced. Our deliverability dashboard dropped 8 points overnight, mailbox providers throttled the next three sends, and the open-rate cohort took a quarter to recover. The infuriating part: most of those addresses looked fine. Valid format. MX records present. A free verifier had marked them deliverable. Turns out most verifiers stop at the easy checks. Format and MX get you ~60% of the way. The remaining 40% disposable inboxes, role addresses, typo'd domains, catch-alls that accept everything and bounce later is where deliverability actually dies. Trumailo runs all eight signals format, MX, real SMTP RCPT-TO handshake to the recipient's server, catch-all probe with a canary address, role detection, 30k-domain disposable list, provider mapping, and Levenshtein typo suggestions in a single sub-100ms JSON response. Cached responses are under 10ms. A few things we're proud of: - Real RCPT-TO probe, not just MX lookup the same handshake your customer's MTA does. - Catch-all detection via a canary local-part, not "we accept everything" guessing. - Full stack is open source Go API, Next.js dashboard, Postgres + Redis + NATS. Self-host or use the cloud, your call. - WordPress plugin just got approved by WP.org auto-detects 20 form / CRM / checkout plugins and rejects bad emails at the form level before they touch your list. On pricing: $0.38 per 1,000 verifications on Pro vs ~$5.24 industry average. 7-day unlimited trial on every paid tier. Free during public beta 200/month, no card required. We'd genuinely love feedback. What checks are we missing? What integrations should we ship next? What would make this a "yes, immediately" tool for you? Try it → trumailo.com