- Check your email settings
- Update your email server settings, including incoming and outgoing server address and port numbers.
- Check any email filters or rules you might have active, you may have accidentally blocked the sender.
- Make sure you're using the right password and username.
- Check the email that is set as your primary email, and make sure it is the correct one.
- Log in to your email account webmail or software client, and make sure POP or IMAP is enabled.