Email checker
Email deliverability tool
Is your email landing in the inbox?
Type your domain to see whether it's set up to be trusted by Gmail and Outlook, and what to fix if it isn't.
Advanced: extra DKIM selectors
Not sure what to expect?
Open a message you sent, as it arrived in the recipient's inbox. In Gmail on a computer: ⋮ → Show original → Copy to clipboard. Paste it below and the results appear straight away.