Yonke imikhiqizo Community Forum

Hello - new forum user with some previous familiarity with Thunderbird. I'm looking for advice on mail import from Outlook (M365) on Mac OS. I will only be using TBird for accessing historical mails in future rather than as the main mail app going forward.

I have installed Thunderbird and looked at the Import Tool but it doesn't list Outlook as an option. I've looked through the Import Tool support pages and I can see Outlook is an import option but it only seems to appear when I filter the web page based on Windows 11 rather than Mac OS.

Am I able to use the Import Tool on Mac OS with Outlook?

I'm using Mac OS Monterey 12.7.6 and have Thunderbird 153.0.1 and Outlook for Mac 16.89 (M365) installed.

If the Import Tool isn't available, is the next best option to drag individual folders from Outlook to the Mac desktop to create MBOX folders and then drag those into Thunderbird?

Thank you in advance.

Environment:

Thunderbird: 153.0.2esr (64-bit) Operating system: Windows Occurs with multiple email accounts Reproduced on two different computers running the same Thunderbird version

Description:

After updating Thunderbird to version 153.0.2esr, released on 4 August 2026, emails can no longer be dragged and dropped from Thunderbird to the Windows Desktop or any folder in Windows Explorer.

The problem occurs with all tested email accounts and folders. It has been reproduced independently on two different Windows computers using the same Thunderbird version.

Saving an email manually with Ctrl+S works correctly and creates the .eml file. Normal drag-and-drop between folders in Windows Explorer also works. Only dragging an email from Thunderbird to Windows Explorer fails.

The issue also appears to affect third-party applications that use Thunderbird to create or send emails automatically.

Steps to reproduce:

Open Thunderbird 153.0.2esr on Windows. Select an email in any account or folder. Drag the email to the Desktop or another folder in Windows Explorer. Release the mouse button.

Actual result:

The email is not copied or saved to the selected Windows folder.

Expected result:

Thunderbird should export the email as an .eml file in the selected folder.

Additional information:

Ctrl+S successfully saves the same email. The issue affects every tested email account. Thunderbird extensions were disabled, but the problem remained. Thunderbird Troubleshoot Mode did not resolve the issue. Restarting Thunderbird, Windows Explorer and Windows did not resolve it. Thunderbird and Windows Explorer are not running with different elevation levels. The problem was reproduced on a second computer after installing the same Thunderbird version. No relevant error is shown in Thunderbird’s Error Console when the drag-and-drop operation fails. The issue was not present before the recent Thunderbird update.

This appears to be a regression in Thunderbird 153.0.2esr affecting email export through drag-and-drop and possibly Thunderbird’s integration with external applications.

I want to get all my emails down and saved before Yahoo starts deleting them. I asked already and got directed to the tool Importexporttool.NG which I got. Installed. Tried it. It didn't work. Something wrong on that machine. Big mess. Now I am here on a new machine: linux mint, new Thunderbird. complete with the tool. I have got two accounts with yahoo. I have one set up via IMAP and it has downloaded everything. Inbox and nearly 100 custom folders. The second one is not set up yet. Next step I think is to get all these emails, custom folders and all, into 'local folders'. Then set up the other account and do the same Then I'm done. Right now I have a hitch: can't clearly see how to do this with Importexporttoolng and certainly don't see any other way. You will appreciate that with 100 folders manual on each folder is something i want to avoid if i possibly can. We only have about three days left I think. Anyone can steer me through this?

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So, I recently got rid of Spectrum as my internet & email provider. I have used the Archive function to archive all the emails from that account but still need to be able to access them after I remove the spectrum email account from Thunderbird. Does Archiving the emails keep them accessible or do I need to so something else. Further info, all of my emails are downloaded to thunderbird and not kept on the server, so they are physically on my computer inside thunderbird program