User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:22.214.171.124) Gecko/20060426 Firefox/126.96.36.199 Build Identifier: Thunderbird version 188.8.131.52 (20060308) Messages that are deleted come from addresses in the personal address book and go directly to the trash folder. Other messages go to inbox normally (that is how I find out about the deleted ones, of course). Filters are off. Junk log does not contain any references. All automatically deleted files had attachments (but no viruses). Messages can be recovered uneventfully, attachments included, provided that one knows that they are in the trash folder. Reproducible: Sometimes Steps to Reproduce: 1.I have had people with email addresses contained in my personal address book sending me emails with attachments (even my own). 2. 3. Actual Results: Some messages are deleted, some are not. In both cases resending the message gives the same result, so it appears as though the attachment dictates the behaviour. The files attached were of different kinds, including DOC, XLS, TIF, PPT, with no consistent correlation. Avast antivirus checks incoming messages and find them virus free every time. Expected Results: Of course all messages should have gone to the Inbox or at least to the Junk folder (since some emails are incorrectly labeled as spam despite repeated measures to do the opposite. When messages are deleted no indication of new email is shown. If there is a mix of deleted and not deleted files, only the latter are indicated as new mail. Hence the risk of missing important emails is very high.
sounds like antivirus program. but reporter ignores all contacts, so => incomplete. suggest you ask for help in forums.mozillazine.org. please reopen the bug if you see the problem using a current version.