How send mail using mailx?

To send mail using mailx, you can use the command line. The basic syntax is echo "Your message" | mailx -s "Subject" recipient@example.com. You can also attach files using the -a option, like this: echo "Your message" | mailx -s "Subject" -a /path/to/file recipient@example.com. Make sure you have mailx installed and configured to send emails through your SMTP server.