YouTube embeds in email are not visible and leave large gaps

Hey Matt,

Hope you’re having a good start to your year! I recently began using the YouTube embeds on my blog. I noticed that in the emails generated by write.as, my posts don’t show the content of the embed but they seem to show large empty gaps in their place.

If embeds aren’t visible, and aren’t trivial to handle, I would prefer if the space used was also hidden.

Here’s a screenshot of my blog:

And the email in Mail on macOS.

Please let me know if I’m missing something or making a mistake on my end.