As I wrote in my question. When you have a Data Driven Subscription in SSRS and when you choose email delivery, there is a field named Comment, which represents the body of the email. It is the message in the email and the report will be attached to this email.
You can write a simple text into this field or choose a db field from the query used as source of the subscription. Problem is when you need a multi-line email with several articles in it (Need to explain what the report is and how to use it). Unfortunately SSRS always removed all the new-lines and put all the articles together as a single line.
After several hours of playing with this I found, that you can put a HTML Source for this field and it will be put as the email body and then correctly showed by the email client :-)
So you can use HTML code:
First article
Second atricle
You can use all the HTML features and the text is then correctly rendered in the client. At least in Outlook. **You have to put the HTML source into this field. :-)**
