User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5) Gecko/20031007 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5) Gecko/20031007 I selected "Offline Usage" for my IMAP Inbox and last week I couldn't view new incoming Mails anymore. Reproducible: Always Steps to Reproduce: 1. a IMAP-mailfolder which uses "Offline Usage" and had over 2 GB mails since it has been created 2. Delete or move many mails from the folder 3. Use the "Compact folder" function to reduce foldersize Actual Results: The filesize of the IMAP mailfolder on server decrease, but the local mailfolder file doesn't get smaller. In my case the local filesize of this folder has been bigger than 2 GByte and only 25 MByte on the IMAP server. I can't read new incoming Mails in this folder anymore, but it worked with old mails. Expected Results: The local mailfolder file should get smaller after "Compact folder" and only keep the mails that really are in this folder on the IMAP Server. Workaround: After I deleted the local folder file, I can read the new mails, too.

another case of bug 207400 *** This bug has been marked as a duplicate of 207400 ***

The symptoms are same, but on IMAP-mailfolders with "Offline Usage" activated the "Compact folder" doesn't work on the local harddrive. Bug #207400 only describes the 2GB limit for POP3 mailfolders.

I tried on my Mac under OSX with Mozilla Thunderbird 0.3 (20031013) "Compact Folders" doesn't work on my offline used IMAP folder.

I've bumped into the exact same problem. Note that Bug #207400 just talks about 2GB limit; however the problem here is that the client-side file size constantly increases. My experience was that the server side IMAP folder was around 100MB, while the offline file INBOX became over 700MB large and never decreasing when I "compact". The disk filled up (so it didn't get any larger), but there was no way to decrease the file size short of deleting it and letting Mozilla rebuild it. Moz 1.5 Gecko/20031007, Win2K SP3.

if you're offline, compacting an imap folder should compact the offline store, in 1.6 - can you try that, please?

Unfortunately I can't install 1.6 at this time - I have 1.5, which greys out the "compact" option when offline. As an aside, assuming it works this way (offline folder file being compacted when you go offline and select "compact") - I'd say it is less than intuitive. A user would expect either the file to be compacted when I compact online, *or* perhaps to have a separate function to "compact offline folder".

Comment on attachment 138731 [details] [diff] [review] proposed fix this patch makes compact all work for imap accounts, by using the folder compactor object to iterate over the imap folders, compacting each of them. It also makes the offline stores get compacted, if needed.

fix checked in. Context menu compact this folder will also compact offline store, if the folder is configured for offline use, and File | Compact All will compact all folders on an imap server, and the offline stores of folders configured for offline use.

Whew, that was quick! Thanks. The behavior you describe is exactly the "right thing".

fixed on m4 branch