You have two options to create HTML emails with Follow up Autoresponder PRO.
1. Built-in HTML editor:
Tiny-MCE HTML editor is integrated into the Follow up Autoresponder PRO. So you can just type the text you want or copy your text into this editor. Once you did this, you can save the message. Your text will be saved as html.
Always use simple basic html tags like break, paragraph, underline, bold, italic, font styles etc. Javascripts or dhtml pop-up codes are not recommended.
You can disable built-in html editor by removing few lines of code in a template file of Autoresponder software. This is very easy ... Open a template file > remove few lines > save it. So you can import your html email code.
2. Use Your own HTML code:
Some people like to create HTML in their WYSIWYG editors like Kompozer or Dreamweaver and use that html. That is also alright but like above said, use minimal html as not all email clients display advanced html.