I am using GMail with Outlook 2013, configured as IMAP. When I select and delete multiple messages from Outlook, they are removed from the inbox and are moved to Trash. After, I do "Empty Folder" on the Gmail\Trash folder and switch folders multiple times, GMail (web interface) still shows some of those deleted messages in the GMail inbox.
My settings are:
GMail: Auto-Expunge on.
Outlook: Default IMAP settings (I have not modified adjusted any settings).
The goal is to have the Inbox in Outlook and the GMail Inbox be consistent and in-sync. Considering the purpose of IMAP, this should be the default behavior.
What is going on? Any help would be appreciated.
Best Answer
I finally found an acceptable way to deal with this Gmail/Outlook 2013 issue.
Go into your Gmail settings at gmail.com. Under When I mark a message in IMAP as deleted set Auto-Expunge to off. Then set When a message is marked as deleted... to Move the message to the Trash (or something else, if you prefer). Click Save Changes.
In Outlook 2013, click on your Gmail inbox. Then, at the very top of Outlook, click on Folder. You'll see Purge in the toolbar area in the middle. Click Purge then click Purge Options. Select the Advanced tab. Uncheck both checkboxes under Delete Items. Click Ok. (Note that checking the option "Purge items when switching folders while online" doesn't seem to have any effect with this setup.)
Now when you receive and then delete a new email in Outlook, Gmail will put that email in your Trash folder. Gmail also gives that email the Trash tag, but it does not remove the Inbox tag.
This isn't 100% ideal, as the Inbox tag remains on the email. However, since it does receive the Trash tag and ends up in your trash (and does not appear in your Inbox nor in All Mail) this is acceptable to me. Gmail deletes all items in the Trash folder when those items are 30 days old. I also cross checked this with my phone (an iPhone). From what I can tell, everything behaves as I would expect.