These ‘enter a valid email address’ messages are similar to trying to send email using one email account whilst connected to another ISP, they block relaying.

This probably means that the server details for each of those are the 127.0.0.1 that will have been set up when The Email Protection Wizard first ran, you need to reverse these changes. Check the tools, accounts, properties, server and details relating to these accounts within those email programs and ensure that they are correct.

I need help with these matters, I've disabled the mail protection feature and it still will not accept any other applications doing email.

Simply disabling the Internet Mail provider protection, will not set your account details back to the state they were at the start.

You need to run the Email protection Wizard (ensure that all email programs are closed), Start>All Programs>Avast Antivirus>E M P, then select the “Automatically remove protection from all my accounts.”

You can also find the Help file in the same location, I suggest that you take some time out to read it, especially the Setting up mail protection.

Once you have things back to square one, you might like to try again once you have read the section in the help file.

HTH - David