Firefox doesn't do email, it's strictly a web browser.

If you are using Firefox to access your mail, you are using "web-mail". You need to seek support from your service provider or a forum for that service.

If your problem is with Mozilla Thunderbird, let us know and we can move this thread to the Thunderbird queue. This question currently is in the Firefox queue for answers.

Yes this problem is with thunderbird sorry if it put it in the wrong thread

moved this thread to the Thunderbird queue

Sounds like more of a question of the author of Adaware. They should know how their software works and how to configure it.

Well I think its an Thunderbird problem as when an anti virus finds a virus in an email it quarantines the main file in thunderbird and you cant get email but worse all your old emails disappear this makes thunderbird unusable as an email client so is a very important thunderbird issue other email clients the same thing does not happen

Regardless of what you think, the issue is with the anti virus product.

Would it be your car manufacturers issue if you got four flat tires driving over the new traffic spikes you placed on your dirve? What your saying in analogous.

Thunderbird 38 which is to be released in a few weeks will have an option for new accounts to have one file per message, which will hopefully see the end of this wanton destruction of data by anti virus programs. The do not delete entire Outlook PST files, so they have no excuse for doing it in other programs either.

In the interim make sure the option under Tools menu (alt+T) > options >Security> Anti virus is set to allow the anti virus to quarantine individual messages. This will work with scanning on receipt, but subsequent scanning in a day or two with updated definitions will still destroy your mail.