New in Labs: Advanced IMAP Controls
October 9th, 2008 | Published in Gmail (Google Mail)
From the team that brought you Mail Goggles, here comes...Advanced IMAP Controls, a Labs feature that lets you fine-tune your Gmail IMAP experience. You can choose which labels to sync in IMAP -- useful if you find your mail client choking on a big [Gmail]/All Mail folder.
After enabling this Lab, just go to the Labels tab under Settings. You'll see a new 'Show in IMAP' checkbox next to each of your labels. Uncheck the box and the corresponding folder will disappear from IMAP.
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There are also some more obscure options for those of you who want to make Gmail's IMAP work more like traditional IMAP providers: you can turn off auto-expunge or trash messages when they're no longer visible through IMAP.
The IMAP protocol allows messages to be marked for deletion, a sort of limbo state where a message is still present in the folder but slated to be deleted the next time the folder is expunged. In our standard IMAP implementation, when you mark a message as deleted, Gmail doesn't let it linger in that state -- it deletes (or auto-expunges) it from the folder right away. If you want the two-stage delete process, after you've enabled this Lab, just select 'Do not automatically expunge messages' under the 'Forwarding and POP/IMAP' tab in Settings.
Similarly, most IMAP systems don't share Gmail's concept of archiving messages (sending messages to the [Gmail]/All Mail folder rather than [Gmail]/Trash). If you'd prefer that deleted messages not remaining in any other visible IMAP folders are sent to [Gmail]/Trash instead, Advanced IMAP Controls lets you set your preferences this way. In the 'IMAP Access:' section of the 'Forwarding and POP/IMAP' tab, find the 'When a message is deleted from the last visible IMAP folder:' option. Select 'Move the message to the Gmail Trash.' If you want to take it one step further, you can select 'Immediately delete the message forever.'