How do you embed a video or picture in an email that people don't have to click on a link to look at?

Thanks!

How do you embed a video or picture in an email that people don't have to click on a link to look at?
I don't know the answer to this, but I remember there USED TO be a something you could click on to easily add a picture directly into the body of your email without having to "attach" the picture in a file. If anyone knows if this can still be done, I'd be very intrested in the answer.

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