Likely fix
Fix: Email says address not found
Address not found usually means the recipient address is mistyped, no longer exists, has an old domain, or the recipient's mail server rejected it.
Quick answer
Check the address carefully, remove extra spaces or punctuation, ask the recipient to confirm it, and try a fresh message instead of replying to an old thread.
Important warning
Autofill can insert old or wrong email addresses. Delete the suggested contact if it keeps choosing the wrong address.
Try this
- 1 Check the recipient address for typos.
- 2 Look for extra spaces, commas, periods, or quotes.
- 3 Make sure the domain after @ is correct.
- 4 Ask the recipient to confirm their address.
- 5 Create a fresh new email instead of replying to an old thread.
- 6 Try sending to one recipient at a time.
- 7 If it still fails, the recipient's mailbox or domain may no longer exist.
Common causes
Typo in recipient address.
Old autofill contact.
Recipient changed email address.
Domain no longer accepts email.
Extra punctuation or hidden spaces.
What to check next
- Check spelling before and after the @ symbol.
- Check whether autofill used an old address.
- Check whether the domain looks correct.
- Check whether replying to an old thread causes the issue.
- Check whether other recipients receive email normally.