How To Export An Archive Of Your Gmail Mailbox, And Open It "Offline" With Thunderbird On Mac - PART TWO - Thunderbird Setup

 Allright, in PART ONE of this saga I showed you how to export your Gmail data.

Now in PART TWO, we setup Thunderbird to open and browse the data.

1. Google exported a zip file that we've downloaded on our computer. In my case it's called: "takeout-20251103T234620Z-3-001.zip", and is in my Download folder.

2. Move the file to a location of your choice, in my case I put it in my Documents folder, inside a subfolder that I renamed "Gmail Takeout Zips". Open the zip file, and the following is decompressed: "Takeout" folder, "Mail" subfolder", "Work/Moviola.mbox" folder. All the messages/data is contained in the ".mbox" folder. Remember I elected to export only one of my labels/Gmail folder, so my dataset / .mbox folder is small. If you were to export your entire Gmail data, the size of the .mbox will likely be way larger, and possibly will come in multiple parts due to the file size option/constrain imposed by Google. I previously exported a Work-DVDList folder, so the corresponding Takeout and decompressed .mbox is also present.

4. Create a new Folder in Documents, and name it "Thunderbird Read Gmail Archives". Copy the ".mbox" files in it. You can then eliminate the remaining emptied Takeout folders. Your setup should look like this:

5. Launch Thunderbird. When presented with the Welcome screen / "Setup your existing email address", Click on Cancel.

6. "No email account configured" pops up, check "Use Thunderbird without an email account" and click "Exit Setup".

7. Thunderbird opens on the Privacy Notice page / tab.

8. Go to: File / New / Feed Account

9. Give the account a name, I choose "Mail Archives - READ ONLY", and click Continue.

10. Thunderbird pops a Feed Account Wizard confirmation window, click Done.

11. You now have a "Mail Archives - READ ONLY" feed in the list. Right Click on the name to reveal a pop-up menu.

12. Click on Settings.

13. For the Message Storage  / Local Directory, Click on Browse

14. Select the "Thunderbird Read Gmail Archives" containing the .mbox folders, and click Open.

15. Thunderbird needs to restart pop-up, click Restart.

16. Thunderbird restarts and now in the local directory points at the correct folder:

17. Click on the Mail Archives - READ ONLY feed tab, and the mailboxes show up:

18. You can now browse, search, export individual messages:

And that's a wrap!