Stationery Templates are very useful for sending standard messages, or including specified information in messages. They also allow you to include a number of macros for the most commonly required fields in your replies.
See also the page about Macro Commands
Stationery will be always be offered for new messages or replies if so configured under the Editing Preferences.
To access the Edit Stationery dialog use Configure 
Edit Stationery.
Note that there will be a "Request for Technical Support" (see Technical Support) template installed, which includes the information Intervations needs to deal with any problems you may encounter.