Category
Tool comparisons and reviews, integrations with Mailchimp, SendGrid, HubSpot, and Klaviyo, and SMTP setup.
304 posts
Secure and verify email workflows in Zapier and Make using domain authentication. Improve deliverability and reduce bounces with real-time verification.
Resolve SendGrid's 5.7.8 invalid authentication credentials error with actionable steps. Verify your API keys, check SMTP settings, and prevent future.
Compare Litmus and Email on Acid for email client testing. See which supports more clients and how MailTester offers real-time inbox placement with 98.9%.
Learn how to verify an SMTP server using telnet step by step. Identify connectivity issues, test authentication, and ensure deliverability with real-time.
Stop email rendering bugs before they hit inboxes. Use snapshot testing in automated deployment to catch layout, CSS, and display issues early.
Use real-time MX and DNS lookup to verify SMTP configuration instantly. Detect errors before sending, reduce bounces, and improve deliverability.
Verify if port 25 is open on your server with real-world methods. Ensure SMTP delivery and avoid email bounces with proven testing techniques.
Use MailTester's real-time email verification API to test infrastructure impact before rollout.
Evaluate your email templates' spam risk before deployment using MailTester’s real-time API in your GitHub Actions pipeline.
Learn how mock SMTP servers help isolate integration testing from inbox placement validation, reducing false positives and improving email deliverability.
Prevent bad emails in Salesforce with real-time verification at capture and bulk checks before import.
Ensure email design consistency across versions using snapshot testing in CI. Prevent visual regressions and improve delivery reliability with automated.
