What menu did you use to make the .wav setting? My understanding (which is not deep) is that IMAP doesn't work with such sound announcements as does POP.

I did not use any setting to make the *.wav file. Wav file was created with audacity using an mp3 file. Why there in no mention in Thunderbird help that wav files cannot be used when IMAP accounts? Your idea is the same as yours ( no sounds for IMAP accounts)

Are we really talking about Supernova? Of course not. Too musch fuss for nothing.

Documentation is generally focused on what works, not on what does not. I regret any confusion.

The help file of a respected application covers all cases. Users are not magicians to discover what works or not.

I am aware of no software that does that. None. I routinely see posts about features that do not exist, such as creating new accounts, converting messages to different languages, converting messages to voice, saving messages by sender, saving addresses by account, and more. THunderbird does not do that and should not be expected to explain such. Users do need to take some ownership and focus on what the documentation says is supported and not guess that other features are as well. Thanks for writing.

Could someone indicate in which help file it is mentioned that sound is not supported for IMAP accunts ? I am and I'm always have been respectful to open source applications ( Many of them are great!!!!). Respects to their developers. The problem here is that a correct manual/help file is not this forum but the one issued by the developers. Due to lack of such, users get confused or frustrated. And I would like to point out that Thundebird without the addons (respects to their developers) would not exist as a standalone email client before long. In thunderbird blog there was too much fuss for this new version (TB 115). What we have now? A polished version of TB 102. Nothing more. End of story.

The help file of a respected application covers all cases. Users are not magicians to discover what works or not.

Perhaps, but it has been 20 years since I saw a real comprehensive manual for any software.

The issues here are manifold, and perhaps not helped by David's understanding that sound just does not work with IMAP.

The wav files generally work, but Thunderbird has historically been quite picky as to what does and does not actually play. I never really got to terms with the issues, but setting the wav file in the account setting and clicking play makes the issues there clearer. If the sound file plays there, then it will work with Thunderbird wwhen it get new mail. If it does not play at that point, please prompt again and I will go off looking for exactly what the specifications are, but I think it is something about bit rates and the file being stereo.

Then we have the issues with when to play the sound file. Modern IMAP severs support a feature called IDLE. This has a sub option for push email. You will find this setting in the server setting as "allow immediate notifications when new messages arrive." This means that mail is immediately forwarded to your mail client when it is received via the IMAP sync process, I am not completely au fait with the IDLE push notifications, but they do only occur for some folders in most implementations, hence the continuing need for timed checks.

Use of Idle is distinct from the timed 10 or 15 minute checks for new mail in the settings line above it and like POP this is the time when new mail sounds apply as the delivery mechanism alerts Thunderbird that there is new mail. So I guess the IMAP sounds will be broken if you allow IDLE, but your mail will arrive slower if you disable it.