Mailtester.com

Check if an e-mail address is valid or not. Our email list checker will lookup and check emails to see if they are valid. We have Mailchimp omnivore checker and other integrations like MailChimp, Activecampaign Current user rating: 4.2 out of 5 based on verified user reviews. Ratings reflect real user experiences in production environments. AI-U provides independent editorial assessments based on hands-on evaluation. Our listings include feature comparisons, integration guides, and pros/cons summaries to help you make informed decisions. Check the full product page for screenshots, video walkthroughs, community discussions, and detailed pricing breakdowns. We verify pricing information monthly and update our reviews when significant product changes occur.