I've installed Thunderbird Portable on a 128 USB key. As it's a pretty short memory, I detach or delete all the attached files of my mails that I want to keep.
On the Thunderbird window, it appears that the size of the message is lower. But when I look at the folders on the installation directory of the program, the size of the folders remains the same. Means that, after some days, even if I detach all the attached files I get, I won't be able to use the program anymore cause I'll reach the max. capacity of my key. What can I do ?