Free Email Deliverability Test - SPF, DKIM, DMARC Checker | MailTester.ai - Check your email deliverability instantly.

Simply forward your email from Mailchimp, Substack, or any other service to test its deliverability quickly. We'll give you clear insights on why your email may be going to the spam folder and guide you on how to fix any SPF, DKIM, or DMARC issues.