Starting early May 2020, attempting to access yahoo, att, aol etc. mail from
claws-mail or evolution gave a tls/ssl handshake error. This happened on
linux mint as well. The solution is to upgrade to new versions:
claws-mail 3.17.5
evolution 3.36.1
These are not yet available on Trisquel, but you can upgrade from the debian
testing (debian bullseye) repository:
deb http://ftp.debian.org/debian bullseye main
You can add to
/etc/apt/sources.list.d/
or /etc/apt/sources.list
Then add debian public keys.
Then update and:
sudo apt install claws-mail
or
sudo apt install evolution
Hope this helps users of my beloved claws-mail.