Email deliverability tester
See what receivers actually see.
Send one email to a throwaway address. MailSends checks SPF, DKIM, DMARC, the sending IP’s reputation, the headers, and the content hygiene that filters care about — then shows you every value it read. Free, anonymous, no signup.
One email per address. No account needed.
Waiting for your email…
Keep this tab open — the report opens on its own the moment your email lands. Send from the domain and mail server you actually want to test.
How it works
Get an address
We hand you a single-use address at mailsends.com. It is not tied to you and needs no signup.
Send one email
Send from the system you want to test — your app, your ESP, your own server. Whatever sends your real mail.
Read the report
Authentication results, transport security, headers and content hygiene, with the raw values behind every verdict.