However I really need a "fully" dynamic text format setting, because I have a large piece of text, inside it, some words may need set to bold (we can not tell which words are needed in advance), some other words need set some other format e.g. <li> </li>.
So we can not preset any formatted test inside the email template.
So I should re-org my question as:
How to set HTML formatting tag inside a property that used in an email template, to let it can be displayed in email with visual effect.