sendmail

Send email. More information: https://manned.org/sendmail.

  • Send a message with the content of message.txt to the mail directory of local user username:

sendmail username < message.txt

  • Send an email from you@yourdomain.com (assuming the mail server is configured for this) to test@gmail.com containing the message in message.txt:

sendmail -f you@yourdomain.com test@gmail.com < message.txt

  • Send an email from you@yourdomain.com (assuming the mail server is configured for this) to test@gmail.com containing the file file.zip:

sendmail -f you@yourdomain.com test@gmail.com < file.zip