if you have the link to the video, you can get the thumbnails of that video too.

i know that youtube provide. dont know about others. and have it in the html <img src=""> that it. will iframe or embed tags in the email makes any security issues at our end?

its a good idea to have the video right away in the inbox. and it is possible.

i believe why you have bandwidth problem/heavy load on server,  is

because of you have the "Realtime" option.

Thanks, but of course a popular news website like BBC does suppies images via this mechanisam and another

popular feedToEmail provider like feedMyInbox.com have the mechanism to catch it and send to readers inbox,

then it must be not something strange, or not something to think twice to update your feed reader software.