Outplay now allows you to embed your HTML codes in your email composer. You can add HTML codes while creating Sequence emails, One-off emails, Email Templates, and Snippets.
How to add HTML Code to your Template?
1) Open the email composer.
2) Click on the 'Code View' to add your HTML code.
3) As soon as you click on the code view, you will be able to see the screen changing into a Text Editor.
4) Create/Drop your codes in the Text Editor and do not forget to Preview before saving the template.
5) Finally, 'Save' the changes.