Sending mail through external smtp server via command line/shell script

Question

Currently the server I have has blocked emails from being sent from it due to spam issues. So I am currently looking for a way to send e-mail through the command line or shell script through an external SMTP server like gmail.

Please note that if I require other software to aid in this issue, I do not have root access on the server thus I cannot install software that requires root but I can install them locally provided that I build from source with ./configure --prefix=$HOME. The server comes with mail and that is really all that is related to email.

Answer 1

msmtp is a command line application that can send email over smtp. You can pipe your email into it. Keep in mind that it is not an mail user agent so you have to pipe in the whole email not just the body.

Answer 2

Just validate if you have mail/mailx installed. mail should be there by default.

You can use smtp details in these commands, to send email via external smtp.

Example:

mailx -S smtp=<smtp-server-address> -r <from-address> -s <subject> -v <to-address> < body.txt