You need to send some file as attachement with mutt.
You can use the following to send an e-mail with mutt containing an attachement as mime type. echo "hallo mail" | mutt -a postfix.pdf > email@example.com
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.