Kmail: Indented paragraphs?

I would like insert text indented text in a message. Some like this:

    Indented text.

But I only can do it if I use a list, with a list-symbol.

I’ve tried to insert this HTML code:

<div> <p style="margin-left: 20px"> idented paragraph</p></div>

However, I supossed that the “list style” “none” would does the job but if I use that option, the indentation is lost.

Is there a solution? Can I change some options (CSS, for example)? I think I’ve look over all options without finding a solution.

I’ve attached an Composer’s image.
You can see the message’s HTML code here: