mailx
A MIME-Capable Implementation of the mailx Command
Nail is a mail user agent derived from Berkeley Mail 8.1. It is intended to provide the functionality of the POSIX.2 mailx command with additional support for MIME messages, POP3, and SMTP. In recent system environments, nail is Unicode/UTF-8 capable. Further, it contains some minor enhancements like the ability to set a "From:" address.
There is no official package available for openSUSE Leap 15.6Distributions
openSUSE Tumbleweed
openSUSE Backports for SLE 15 SP4
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.