i'm not really in need, but just want to figure it out.
is it true that i can't embed html into gmail?
i notice that i can get the html code from the pdf file in google drive.
and i can see it(pdf) show up in gmail while paste the code into inspection.
somehow, when i send it(the mail), it(pdf) just disappears.
on the other hand, google form can be embeded into gmail....(howcome!!)
only by clicking the button( one of the check box).
btw, the pdf file i need include many pages, so it can't be snapshotted.