How to insert video in the body of an email message?

[jaialai]

Hello everyone, I am trying to create an email message with Roundcube and I have the problem that I insert an embedded video in the body of the message but when I send the message and then receive it on a computer or mobile phone, the embedded video IS NOT DISPLAYED . I have the video uploaded to Vimeo.
In principle, the steps to insert a video with Roundcube are simple, click on the video icon, then put the vimeo URL and finally the frame size... but it doesn't work. Any solution?