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.
Bounce codes and SMTP errors explained
Use a reliable email validation service to cut bounce rates, protect sender reputation, and improve inbox placement in B2B campaigns. Start with 100 free verifi
Read article →
Test your drip campaigns faster with built-in email verification. Reduce bounces, boost inbox placement, and clean lists before sending — all in one workflow.
Clean your Shopify email list with real-time verification and bulk checks to reduce bounce rates and boost inbox placement. Start with 100 free verifications.
Ensure in-game purchase reminder emails reach inboxes. Use real-time deliverability testing to catch bounces, spam traps, and domain issues before sending.
Clean your podcast list with real-time verification and inbox-placement testing. Reduce bounces, improve deliverability, and boost engagement. Start with 100 fr
Learn how to set up DNS for AWS SES email sending safely and correctly. Reduce bounces, improve deliverability, and verify your domain with real-time tools.
Improve deliverability and reduce bounces by validating franchise CRM email lists with real-time and bulk verification. Boost inbox placement with MailTester’
Clean your WordPress email list and ensure inbox placement with real-time verification and deliverability testing. Boost engagement and avoid bounces.
Use MailTester's Postmark integration to run daily email deliverability health checks. Identify bounces, spam traps, and invalid addresses before they hurt send
Boost inbox placement for your online store’s subscribers. Clean your list, fix authentication, and test deliverability with real-time verification and inbox
Boost your gaming product team’s cold email delivery rate with real-time verification, inbox testing, and list hygiene. Cut bounces, avoid spam traps, and imp
Ensure your cold outreach lands in inboxes with accurate email validation. Clean your list, reduce bounces, and boost deliverability on personal domains.
Stay sharp
Occasional, practical notes on verification and inbox placement. No spam — we'd be embarrassed.
