There are no settings within Thunderbird because this has nothing to do with Thunderbird.

As you are talking about your AVG product, so I would ask on an AVG forum. I located this info which may be of help:

• https://support.avg.com/SupportArticleView?l=en_US&urlName=How-to-set-up-AVG-email-scanner-for-Gmail

Hi, Thank you I have checked this but it only covers gmail. I have many different may providers and would really want to have an email scanner to cover all accounts not just gmail. What is the reccomended virus scanner to use that does check emails that come in via TB ?

re : I have checked this but it only covers gmail. It would be logical to assume that it is the same process in the same place, but you enter the relevant data.

Please use the relevant information on AVG forums/website. I have just googled this and it shows info for aol; compair what data is inserted for gmail and aol, then use the relevant data.

• https://support.avg.com/SupportArticleView?l=en_US&urlName=How-to-set-up-AVG-email-scanner-for-AOL&q=Set+up+AVG+email+scanne

How to set up AVG Email Protection to scan encrypted e-mails https://support.avg.com/SupportArticleView?l=en_US&urlName=How-to-set-up-AVG-E-mail-Protection-to-scan-encrypted-e-mails&q=AVG+can+not+scan+SSL+connections

Setting up exceptions...if scanning badly effects Thunderbird use. Obviously, if scanning is being done, there may be some performance/slowness issues due to AVG. You can set it up so that Thunderbird program and thunderbird profile foldres are excempt from scanning.

• https://support.avg.com/SupportArticleView?l=en_US&urlName=How-to-exclude-file-folder-or-website-from-AVG-scanning&q=Email+scanning

• https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#AVG

So I have to do this for each of the email accounts ?