Sendmail Linux Examples

Sendmail on the command line:

$ sendmail emailaddress write body of message CTRL-D

The CTRL-D is a end of message code for standard-in.

Example :



enter body of message


This message is missing a useful TO:line as well as a subject. To create these you need to create a file or use a script.

   $ vim email.txt

date: todays-date    // not required


subject: subject


Body of message goes here


Then call sendmail with that file as an input:

    $ sendmail -t < email.txt


Or you can use the -toption to to tell sendmail to read the header of the message to figure out who to send it to.

$ sendmail -t < mail.txt


This will process the To: and CC: lines for you and send the mail to the correct addresses.

Or call from a script:


use Time::localtime;

open (OUT,”|/usr/sbin/sendmail -t”);

print OUT “From: your-email\\n”; ## don’t forget to escape the @

print(OUT “Date: “.ctime().”\n”);

print(OUT “To: $email\n”);

print(OUT “Subject: $subject\n”);

print(OUT “\n”);

print(OUT “$body\n”);



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