You probably already know that SMTPeter is not only an email gateway, but also a centralized template store. The editor for the templates has recently been enhanced. It now is possible to write the HTML code of the templates yourself, and you are no longer forced to use a drag-and-drop editor (although if you like the drag-and-drop editor, you can of course still use it).
To create a new HTML based template, simply choose for the option to create a ‘blank HTML’ template. The style blocks in the HTML code will be automatically inlinized when the mail is sent (unless you tell SMTPeter not to do so).