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Bad emails in your CRM mean bounced outreach and skewed metrics. Validate at import and at sync boundaries so every contact that enters has a deliverable mailbox behind it.
That was the real API, no signup needed — free tier is 50 checks/day per IP (resets 00:00 UTC). See the docs for the full reference.
# same endpoint, same verdicts — one GET, no key needed curl "https://validmail.dev/v1/[email protected]"