I used to use Claws and it is pretty good if the lack of HTML support isn’t a problem for you, I can recommend it. I’m now using Thunderbird again (work uses HTML w/CSS emails) and I have the same issue as you, I don’t like leaving it open in the background because of the RAM issues. I ended up buying more RAM recently to prevent OOM crashes.
I use thunderbird, but might switch to claws after reading this. Seems to be pretty popular:
https://www.slant.co/topics/7960/~linux-email-clients
I used to use Claws and it is pretty good if the lack of HTML support isn’t a problem for you, I can recommend it. I’m now using Thunderbird again (work uses HTML w/CSS emails) and I have the same issue as you, I don’t like leaving it open in the background because of the RAM issues. I ended up buying more RAM recently to prevent OOM crashes.
Thanks for the link.
Perhaps this is a Mac thing but Thunderbird on Mac was hitting ~45% on the CPU. Does it clog up on linux?
CPU isn’t too bad for me, but RAM is pretty bad, to the point that I don’t like leaving it open in the background.