E-Mail folder in the Thunderbird out
Just E-Mails with attachments will cost you a lot of storage space. Therefore, you should in Thunderbird some of the folders out:
- To do this, click in the left column with the right mouse button on the folder you want to compress.
- A menu will open. Select Compress "on"here
- The compression starts and ends automatically without a confirmation. Depending on the size of the folder, the process can last a while. So let Thunderbird best in the Background for some time.

E-Mail-folder compress
This practice tip is related to Thunderbird 24.5.0. Read also, how to you in Thunderbird, an E-Mail signature to create.