- Check if the email server is working properly
- Check the emails you filtered out as spam and make sure that legitimate emails are not being filtered there
- Check any rules you have set in your account and make sure that incoming emails are not being directed to a folder other than your inbox
- Check that your account disk space limits are not full and the mail can be delivered on it
- Check if the contacts from whom you are expecting emails have not mistyped or input your email address incorrectly
- Check with your friends and contacts that the emails that they sent to you, have been sent successfully.