How to create an email campaign using HTML source code?

In the “Marketing Tools” which is primarily being used to create EDMs, send promotional email etc. There has been a need whereby the user could be able to add/edit its own HTML code

We have added this new feature whereby a HTML code area has been provided where the user can add its own html code.

Click the "Create Template" button in Green. From the Template Details page, Select  HTML section, enter the template name and click the create button.