I have a piece of HTML which I want to send as an e-mail. In previous versions Outlook.com had an option to edit HTML but I am not finding anything similar in the latest version. How can I do that now? 
How can I send an HTML e-mail with new Outlook.com web access?
outlook.com
The easiest way to add HTML to an email for a browser-based email client is to copy and paste it.  But the catch is, you can't copy and paste the actual HTML markup -- you have to capture the results of the HTML.This article has a good detailed breakdown of how to copy and paste HTML code into an email.  (Note that for step #1, you don't need an actual HTML editor; you can use any text editor, like Notepad.)EDIT: This method works with mixed results in the Outlook.com email editor.  For example, copying and pasting the Stack Overflow toolbar renders outside the body of the email:but other HTML snippets will render inside the body, like this Stack Overflow content:However, both examples were able to be sent, and the HTML rendered correctly in the received email (and was functional -- links could be opened).