Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Where is the address book file for Thunderbird?

more options

Where is the address book file for Thunderbird? I want to copy my Eudora addressbook into Thundbird. Import won't work because Eudora isn't running, I just have the files (.toc & .txt). I was able to do this with my messages. How can I do it with my address book?

Where is the address book file for Thunderbird? I want to copy my Eudora addressbook into Thundbird. Import won't work because Eudora isn't running, I just have the files (.toc & .txt). I was able to do this with my messages. How can I do it with my address book?

All Replies (1)

more options

All the Thunderbird info is in your profile. You can find this by going to the Help menu and selecting Troubleshooting Information. There is a button labeled Show Folder. The address books are .mab files. If you think that you can just throw .toc or .txt files in there be prepared for failure.

Open the .txt file in Excel or Open Office and then save as a .csv file. You can import this file type into Thunderbird.