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 testing inside your ESP, CRM and sending platform
Make the right Amazon SES IP choice for your startup. Use this decision tree to avoid deliverability issues and improve inbox placement.
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Test email inbox placement with SendGrid, Postmark, and SES sandbox. Validate deliverability before sending at scale with real-world testing.
Compare how adding a text part affects your email spam score. Use real inbox-placement testing to measure deliverability impact and avoid filtering.
Discover the top reasons your emails get a spam score of 10—plus how to fix them with real verification tools and inbox placement tests.
Discover whether BIMI or a brand logo actually affects email tab placement. Learn the truths behind inbox appearance, deliverability myths, and how.
Stop losing users to Gmail’s Promotions tab. Learn why confirmation emails get filtered and how to verify email deliverability with accuracy.
Compare Lemlist vs Smartlead's deliverability features and sending controls. See what impacts inbox placement, sender reputation, and campaign success.
Discover how unsubscribe link placement affects promotions tab delivery. Boost inbox placement with real verification and deliverability testing using.
Prevent spam complaints and Spamhaus listings with real-time email verification. Clean your list, protect sender reputation, and maintain inbox placement.
Decide whether to warm up to Gmail first or all providers at once. Learn the mechanics of sender reputation, deliverability risks, and how MailTester’s.
Evaluate if a dedicated IP is worth it for 10,000 daily emails. Avoid wasted sends, bounces, and deliverability issues with real email verification.
Understand how SpamAssassin assigns point values to DKIM and SPF checks. Learn how to interpret scores and improve deliverability with real-world fixes.
Stay sharp
Occasional, practical notes on verification and inbox placement. No spam — we'd be embarrassed.
