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.
Deliverability monitoring, metrics and reporting
Build a scalable system to warehouse real-time email deliverability events. Reduce bounces, improve inbox placement, and maintain sender reputation with.
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Discover how email authentication standards differ between free and corporate email providers.
Discover how double opt-in impacts inbox placement with Gmail, Outlook, Apple Mail, and Yahoo. Learn what actually moves the needle on deliverability.
Decode the yellow traffic color signal in Smart Network Data Services and its impact on email bounce rates.
Learn how Mail.ru handles DMARC quarantined emails and why they end up in the spam folder. Use real-time verification to prevent deliverability issues.
Use verified email tools to clean lists and stop transactional emails from failing after marketing blasts.
Discover why third-party tracking domains appear in your emails—even when you didn’t set them up.
Stop email campaigns from being sabotaged by Barracuda Link Protection. Use real-time email verification to detect unsafe, rewritten links before sending.
Test how spam filters see your preheader text with real inbox placement checks. Prevent filters from hiding key message cues before the email opens.
Improve email deliverability by stabilizing your sending IP. Learn how consistency reduces spam flags and boosts inbox placement with verified data.
Learn how to reproduce a spam complaint from one user with precise steps. Use email verification to prevent future issues and maintain sender reputation.
Learn how to get your Microsoft email sender account unstuck from throttling. Fix deliverability issues, reduce bounces, and restore inbox placement with.
Stay sharp
Occasional, practical notes on verification and inbox placement. No spam — we'd be embarrassed.
