Troubleshoot email problems in Mail on Mac

Problems sending messages

If you can’t send emails

If people don’t receive emails you send

Problems receiving messages

If you can’t receive emails

If emails aren’t displayed or look strange

If junk mail filters aren’t working

Problems viewing messages and mailboxes

If a mailbox is offline

If searching doesn’t find the right emails

If emails aren’t displayed or look strange

If emails appear to be missing

If you can’t open Mail

If messages are in a Recovered Messages mailbox

Problems using your email accounts

If an email account is inactive

If a mail server rejects your login information

If Mail can’t connect to your email account

Free up storage space for email accounts

Problems with security

If Mail can’t decrypt emails

If Mail can’t verify a server’s certificate

If Mail can’t verify a signed email