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.
Email authentication: SPF, DKIM, DMARC, BIMI and MTA-STS
Learn how to validate Ed25519 DKIM signatures in production without risking inbox placement, reputation, or delivery.
Read article →
Proactively document opt-in consent during email verification to strengthen FTC complaint responses.
Fix SPF record misalignment that disrupts email routing and harms inbox placement. Use real-time verification to catch errors before they impact.
Validate SPF records without needing a live domain. Test email setup in advance, avoid bounces, and improve deliverability with real-time verification—no.
Reduce spam traps and invalid addresses with pre-import email validation. Clean your list before sending to protect sender reputation and boost.
Ensure your email validation respects RFC 6531 for non-ASCII local parts. Avoid delivery failures with accurate, standards-compliant verification.
Learn how long seed email accounts stay valid for inbox placement testing. Get real answers to improve deliverability and reduce bounce rates with.
Identify and fix domain reputation problems blocking your Shopify newsletters. Use real-time verification and inbox testing to ensure delivery and.
Detect and fix false negative DMARC reports in email authentication. Use real-time verification, inbox testing, and precise validation to improve.
Ensure your email authentication works correctly. Learn how SPF mechanisms process on port 465 with TLS encryption and avoid delivery failures.
Discover why different email verification platforms give conflicting results—and how to get consistent, accurate validations using real-time tools and.
Improve cold email deliverability by validating DKIM signatures. Detect misconfigurations and boost inbox placement with precise, real-time verification.
Stay sharp
Occasional, practical notes on verification and inbox placement. No spam — we'd be embarrassed.
