I am using an ASUS computer which was Windows 8 for the first couple of years, and I had it upgraded to Windows 10 and am not impressed. Instead of using the Windows 10 e-mail I am using Windows Live Mail. I can receive e-mails with 10 or 15 photos and Videos without any problems. But I can not send the same. Typed messages are OK but, if I add one single photo the people on the other end get an unreadable message about 10 or 12 times. I don't want to chuck it in the bin and buy a Windows 7, but I can't see any other way.

I didn't find the right solution from the Internet.
References:https://www.computerforum.com/threads/e-mail-hassel.242080/

Animated Video Example