Comment 150 for bug 275471

(In reply to comment #142)
> However the backend is implemented, this is what the user should experience.
> There seems no sane reason to redownload attachments ever apart from perhaps
> coming up against some set limit for local cache size.

And morer specifically, if a folder is set to offline mode, then the emails/bodies/attachments should be stored in the offline store, NOT the cache.

I can also confirm that TB5 still redownloads attachments over and over again in folders set to offline mode - first, when you click/select the message, then again if you choose to 'Save As' the attachment, then again if you click a different message then go back to the message with the aqttachment.

Infuriating, when you have a lot of messages with large attachments on a remote/slow link to your imap store.