This is also useful should a program update go awry.

To find the name and location of your Thunderbird profile folder:

Launch Mozilla Thunderbird.

SelectHelp>Troubleshooting Informationin the menu bar.

A picture of a mom on the computer with daughter in background

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Go toProfile Folder>Show in Finder.

This will display your profile folder inFinder.

It must not be running when you move the profile folder.

Thunderbird’s Help menu

Copy the profile folder and transfer it to a different computer, or paste it into the desired location.

and then open it on the other gadget.

If you have a lot of mail, the copying process can take a long time.

Thunderbird’s Troubleshooting Information

you’re able to rename the folder if you desire.

If you have a lot of mail, the copying process can take a while.

Here’s how:

Openprofiles.iniin a text editor.

You’ll find it at/Users/[your username]/Library/Thunderbird/.

Under the profile you just moved, changePath=to the profile folder’s new location.