tkrat
A very mighty, graphical emailclient
TkRat is a very nice e-mail client with a graphical user interface. It supports all major protocols (SMTP, POP3, IMAP) and mailbox formats. It has powerful search function, is localized, can handle encrypted and MIME-encoded e-mail, has a nice mail monitor, can sync e-mail for offline work, and has many other nice features.
There is no official package available for openSUSE Leap 15.6Distributions
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.