The invitation message can be customized using /post_invitation invite_message:<Message of your choice, to be displayed as a Discord embed>
You can post as many invitations as you like, each one with its own custom message.
Posting an invitation also automatically enables the bot in case it wasn’t enabled before.
Important note: the bot must have permission to send messages to the channel where you want to post the invitation. Otherwise, the bot will not be able to post the invitation.