How to create a new mail subfolder in Mozilla Thunderbird
Follow the instructions to create a new mail subfolder in Mozilla Thunderbird:
Open Mozilla Thunderbird.
Select the appropriate folder. For example, ‘Inbox’.
From the ‘File’ menu, select ‘New’, and click ‘Folder’. (The ‘New Folder’ dialog box appears.)
In the ‘Name’ box, enter the appropriate name.
Click ‘OK’. (A subfolder appears with selected folder.)
Mozilla Thunderbird enables you to organize and arrange e-mail messages in a better way so that you can search for previous messages easily. Segregation made through subfolder makes the operations more organized and personalized as well.