How can I change email invitation message?

Is it possible to change the standard email invitation template to your form so I don't have to keep rewriting the same standard message each time. Can I set the default message.  These seems like a basic function but I can't seem to find it after hours of searching.  Thanks.

I think you are probably referring to the message in the email notification that is received?

If so, then that is apart of your email notification template. Please see this guide here to access it and you may make modifications to it from there.