软件包：bsd-mailx（8.1.2-0.20220412cvs-1） [debports]

simple mail user agent

bsd-mailx is the traditional simple command-line-mode mail user agent. Even if you don't use it, it may be required by other programs.

The /usr/bin/mail command provided by this package is a very simple one, and does not include many features that can be found in more advanced mail user agents.

For example bsd-mailx DOES NOT support:

 - MIME           (i.e. no attachments, no UTF-8 or other charsets support);
 - SMTP protocol  (/usr/sbin/sendmail interface only is used);
 - POP3/IMAP      (bsd-mailx reads local mailboxes only);
 - maildir format (traditional mbox only format is supported).

If the above features are needed, please consider installing another package providing similar /usr/bin/mail interface:

 - s-nail package,
 - or mailutils package.

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