Useful snippet I wrote up after searching the internet for details on syntax for sendmail in Linux.
PRETTY_HOSTNAME=$(hostnamectl --pretty)
ADMIN_USERNAME='username'
ADMIN_PASSWORD='password'
sendmail -F "noreply@website.com" -it <<END_MESSAGE
Content-Type: text/html
MIME-Version: 1.0
To: person@email.com
Subject: [INFO] Connection Details
Hostname: $PRETTY_HOSTNAME <br />
If your program is down, do the following.
<br />
1. Open Putty <br />
2. Establish Connection to $PRETTY_HOSTNAME <br />
2a. Username: $ADMIN_USERNAME <br />
2b. Password: $ADMIN_PASSWORD <br />
3a. Check for the status of your program. <br />
If there are any questions or concerns please reach out to your server admin.
<br />
Thanks, <br />
Automated System
END_MESSAGE
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