Hello David,

The file has been unzipped. Attached are screenshots of all of the contents in the file. Nothing happens when I double click on the mbox file that has a Thunderbird Icon and is titled "All mail including spam and trash." Thank you.

Brett, will you try the take out process again?

I have some trouble to import .mbox extensions (download from gmail). I have add-on ImportExportToolNG. but can't locate where to import.

You are trying to import a profile.

Instead, right click on local folders and follow the ImportExportToolsNG menu to import one mbox file at a time.

You probably do not want to import All Mail because it duplicates messages. Did you re-do the take out process so that you have more individual mbox files? Unzip the take out file to see?

If you know that you have many good mbox files, there is another process that is faster. Let’s stick with this process for now.

You are trying to import a profile. Instead, right click on local folders and follow the ImportExportToolsNG menu to import one mbox file at a time. You probably do not want to import All Mail because it duplicates messages. Did you re-do the take out process so that you have more individual mbox files? Unzip the take out file to see? If you know that you have many good mbox files, there is another process that is faster. Let’s stick with this process for now.

thanks Rick, I can't get multiple .mbox files from google takeout. it seems no such option from what I can select in google. I have one huge file ~90G to import not sure if this creates other problems.

I wrote earlier:

I do not know how you will work with inbox, spam, trash, et cet. all in one folder after you import that mbox file into Thunderbird. It does not seem useful to me, especially when you must already have inbox, spam, trash, et cet. in Thunderbird.

Apparently, when you got the data from Google, you had an option to put messages with different labels into different mbox files. See here: https://jpc-design.com/2022/02/15/how-to-download-export-emails-with-google-takeout/

I would think that taking that step would make the imported messages much more useful to you and leave you less work to do after importing the messages. You may want to use the take-out process again and see if you can get mail separated into more folders.

——-

Did you try those instructions?

Brett, I have more time now to review and think about your whole situation. Time has passed since you first posted.

I understand that you want to use your gmail account from within Thunderbird and that your gmail account is already set up in Thunderbird. Is that correct?

Then I do not understand why you are trying to import all your gmail messages into Thunderbird. They will be duplicates of what you already have access to through Thunderbird.

So would you please tell us more about what you are trying to do and why?

Can you not access all your gmail messages from Thunderbird now? Do you want gmail messages in local folders so that you have back-up copies of them? Are you preparing to stop using your gmail account? Are you using too much storage at Google and need to reduce your usage?

As much as I understand now, there is no reason for you to import all your gmail messages into Thunderbird.

If you have a good reason to proceed, do you want all your gmail messages, including trash, in a single folder in Thunderbird, or do you want them in folders according to their labels in gmail? If you want them in separate folders, you will want to try the directions for take out here:

https://jpc-design.com/2022/02/15/how-to-download-export-emails-with-google-takeout/

At first you reported an mbox size of 1.72 GB. Now you are reporting more than 90 GB. Why the big difference? How would you use a single folder of that size that contains all your gmail messages, including trash?

If you really just want to import the mbox file that you have in hand now, follow sfhowes instructions:

Extract the mbox from the zip file; it might have a .mbox extension. Remove the extension. In TB, Help/Troubleshooting Info, Profile Folder, Open Folder, close TB, copy the mbox file into Mail/Local Folders in the profile. Restart TB, find a folder with the name of the mbox under Local Folders in the Folder Pane.

Can we try to help in any other way?