Thunderbird Email stores profiles separately from its personal programs files. It has several advantages in this way. If, somehow
Thunderbird is corrupted or we need to uninstall it, we don’t lose our message and settings. We also don’t require to re-install Thunderbird
Email. Each profile is stored in profile folder and uses following convention.
…where “<random_string>” is eight digits randomly generated by Thunderbird and “<profile_name>” is the name you assigned to the profile. The location of the folder will vary according to the operating system .
Profile Location Summary
%APPDATA% is shorthand for the C:\Users\<username>\AppData\Roaming\ folder, which depends on Windows user account name.