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I'd like to use Thunderbird to regularly download all the mail in my Gmail account via IMAP, so if something happened to Gmail or my internet connection is disrupted, I can still access all my mail.

My question is specifically about Thunderbird. Besides setting up the IMAP account, what else do I need to do in Thunderbird to ensure that all messages and attachments are synchronized locally as often as possible (not just when I "go offline" or manually synchronize).

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up vote 2 down vote accepted

1) Go to Tools / Options / Advanced / General / Config Editor

2) Search for mail.check_all_imap_folders_for_new and set to "true"

3) Go to Account Settings / Server Settings

4) Check 'Check for new messages at startup" and "check for new messages every x minutes"

5) Go to Account Settings / Synchronisation and Storage

6) Ensure "Keep Messages..." is enabled, with all folders checked in Advanced, and in Disc Space, "Synchronise all messages regardless of age"

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Thanks. Found some more settings that should be set here. – jrdioko May 8 '12 at 2:17

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