I am not getting my emails, my wife sent me one this morning as a test, did not come in. internet is ok, just no email.
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It could be one of several things.  It could be a settings problem.  Maybe something was changed in mail's settings.  it could be that mail forgot the password to the account.  That can happen if the password file became damaged.  it could be that you have an unusually large incoming or outgoing email stuck in the download or upload path causing all the other email not to go through.