Displaying email size in apple mail Version 13.4? Context
In previous versions of Mail one could see the size of an email in Apple Mail.
Question

Is it possible to recover this feature in Apple Mail 13.4 (MacOs Catalina)?

It seems that knowing the size of your email is useful, if only to avoid sending too large attachments?
Alternatively, how does one have access to the size of a given email?
Thanks to @jaume, the solution is in fact fairly trivial:

View&gt;Show Message Size in Mail

will display the size of each message.
I hope this post will be useful to someone like me who did not look at the correct place for the answer.