messages added to sub folder disappear

right click the folder, select properties and then the repair button.

Please see my original post.... I've tried this :(

I've tried re-indexing dovecot on the mail server for this mail box, and it had no effect.

I logged in using roundcube webmail and the mail box is correct there, so it seems the problem is definitely to do with Thunderbird.

Next, I purged thunderbird, including conf files and caches and completely re-installed, reconnected to my server. Even that hasn't worked.

I'm baffled. This is only ONE subfolder. Every other folder is correct.

re :I have tried removing ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases.msf

You deleted the index file. Please confirm you exited thunderbird first.

Do you see an mbox file called 'purchases' - no extension?

• ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases

If you open the 'purchases' mbox file using a text editor program like Notepad++ - The oldest emails will be at the top, so you 'll need to scroll down. Do you see the more recent emails in that file?

Do not compact folders.

Query - what set up are you using in Folder Pane? In Folder Pane, are you using View > Folders > ALL ?

OR have you selected View > Folders > Unified ?

In the imap 'purchases' folder How many/number of emails are displaying in that folder? Please confirm all ok in this location: In 'Account Settings' > 'Synchronisation & Storage' for imap account click on 'Advanced' button Is the 'purchases' folder selected? - if no then select it.

Under 'Disc Space' What did you select? Suggest 'Synchronise all messages locally regardless of age' Confirm no restriction set on size etc

Have you tried this:

• Right click on 'purchases' folder and select 'Properties'
• Select 'General Information' tab - usually selected by default :)
• Select checkbox 'When getting new messages for this account always check this folder'

• Select 'Synchronisation' tab
• Select 'Select this folder for offline use'
• Click on 'Download now'
• click on 'OK'

Toad-Hall .... thanks for your exhaustive suggestions.

I exited TB before removing .msf file The purchases file (no extension) has vanished and does not rebuild. It was there previously. It vanished after I clicked "properties -> repair folder" When I restart TB, only the headers up to 2014 appear. If I click on the message list (or use ctl-U) the bodies of the emails are not there.

I do not compact folders According to purchases -> properties -> number of messages: 395 According to <.INBOX.purchases/cur# ls | wc -l> on the actual server, there are 1806 Synchronisation & Storage, purchases is selected 'When getting new messages for this account always check this folder' is checked

Synchronisation, Select for offline, both selected

Clicked "Download now" and OK

Nothing has changed. I'm hoping I've done something really stupid, but so far I'm too stupid to work out what ;-)

I've rechecked the server. All the emails are still there. I can't see any difference between the last email listed in "purchases", and the first one NOT listed.

I purged TB from my spare laptop, including config and cache files, and re-installed but still no joy.

One thing I didn't mention - "purchases" has a sub folder called "insurance and registration". The subfolder works correctly!

I can access this mailbox using Roundcube Webmail and all the emails appear normally.