bsd-mailx: bsd-mailx 8.1.2deb4 (Simple mail user agent)
bsd-mailx: 
bsd-mailx: bsd-mailx is the traditional simple command-line-mode mail user 
bsd-mailx: agent. Even if you don't use it, it may be required by other 
bsd-mailx: programs. The bsd-mailx provided here is very simple. It only 
bsd-mailx: supports local mailbox, and does not support MIME, SMTP, POP3/IMAP 
bsd-mailx: or maildir format. If you need those features, please install 
bsd-mailx: mailutils or s-nail package instead.
bsd-mailx: 
bsd-mailx: https://packages.debian.org/stretch/bsd-mailx
bsd-mailx: 

