As most users I have some folders in Thunderbird with a huge number of mails. Now I want that Thunderbird deletes mails automatically.
How to make Mozilla Thunderbird delete old messages in a folder automatically?
- Click on the desired folder with the right mouse button.
- Select the Properties… entry from the menu.
- Switch to the Retention Policy tab.
- Uncheck Use my account settings
- Delete all but the last __ messages or Delete messages more than __ days old