# sendmail > Send email. > More information: . - 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}}`