What's the best way to make sure embedded media shows up within the templates?

Q:  I embedded a video into one of my templates; however, it doesn't show up when the actual email is sent. Any help with this?

A:  If you copy and pasted the embed link into the Template, that must be done when you are editing the template in HTML. Also, make sure not to paste anything other than plain text into your Template. If you're copying content from somewhere else, you must "strip" any source code before pasting it into the Template. You can do that by first pasting it into Notepad. MS Word will not work.

Q:  Does the same apply for images?

A: No, you use the "Insert Image" icon for that. You must use an image resident on your computer so Dropbox and Google Drive are not options.