I'm using the module Privatemsg on a website I'm currently working on.
I have a user which has a special Role ("system user") and which is only used to send automatic notifications, through private messages, to other users on the website.
This user is allowed to use my "HTML" text-format. When logged in with this special user account, I'm able to choose between "plain text" and "html" text formats while manually sending a private message. Plain text is set by default, though.
Every notification sent by this user is automatically generated and sent through Rules, using the "send message" action.
Unfortunately, I can't get the messages sent this way to take HTML into account (I need to put various internal links in those messages).
Is there a way to enable (or force) HTML in private messages sent by Rules?