Created attachment 8836000 [details] new-mail-notification-log.zip User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:51.0) Gecko/20100101 Firefox/51.0 Build ID: 20170125094131 Steps to reproduce: I have one account (IMAP) in Thunderbird and a New mail sound enabled Open Thunderbird. Leaving Thunderbird open. Actual results: On startup a New mail alert appears with New mail sound but no new mail is received. After a few minutes New mail alert appears again (repeatedly) with New mail sound and still there is no new mail. Expected results: No New mail alert if there is no new mail. If I use POP3 on the same mail account, everything is OK.
Just to clarify - "New mail alert appears" = tray icon appears
Summary: IMAP: Repeating New mail notification, but there is no new mail → false/incorrect repeating New mail notification, but there is no new mail. (imap)
I've had this issue for years and only recently stumbled across the cause. I believe it has to do with the control characters issue listed on http://kb.mozillazine.org/New_messages_do_not_appear , though it wasn't blocking my receiving of e-mail, just causing endless new mail notifications. Going into my webmail, I found the troublemaking spam e-mails and was able to mark them as read/delete them and the notifications have stopped. My webmail also had issues rendering the e-mails though; in the list view it would show without any From/To/Subject though some of these e-mails had those specified when opened. I'll try to pin down what it is about these e-mails that are causing an issue or I'll just their source here if I can't figure it out.
You need to log in before you can comment on or make changes to this bug.