The Blog
Hard-won lessons on email verification, inbox placement, and keeping your sender reputation spotless — from the team that's been verifying email since 2000.
List Hygiene
Clean your list with accurate email validation and disposable domain filtering. Reduce bounces, improve deliverability, and boost inbox placement with real-time
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Secure your domain against spoofing using DNS authentication. Verify your setup and protect sender reputation with real-time checks and inbox placement tests.
Stay sharp
Occasional, practical notes on verification and inbox placement. No spam — we'd be embarrassed.
