I have been using Thunderbird for some time at home, but the sent mail stays on a folder on that computer. As you might imagine, this folder is getting a bit big, and deleting isn't always an option since I use it for work.
In T-Bird's settings it looks like there is a way to have sent mail copied to the server, but I don't know the correct settings. Any ideas? Thanks in advance.
Never mind, I think I figured it out.
Edit/Account Settings/Copies & Folders/[x] place a copy in/[x] other/Sent on email@example.com
Seems to be working.