Mail-Tester.co.uk is a lightweight email deliverability checker. It generates a unique test address, captures the email you send, and shows a clear breakdown of the signals that commonly impact inbox placement.
Authentication proves identity - it does not guarantee deliverability. Real inbox placement also depends on domain/IP reputation, sending behaviour, content quality, and engagement. Use the results page to spot quick wins, then iterate.
Go back to the homepage, generate an address, send a test email, then open your results link. If you want help, use the “Do you need help?” form on the results page and we’ll reach out.