Clarification on Font Size in Simple Mail & HTML Editor

My client was confused about the font size in the Simple Mail and HTML editor, as there’s no clear indication of whether the size is in points (pt) or pixels (px).

Would it be possible to add this specification? I noticed that Ontramail displays "px," but the other two editors do not.

I hope this is a simple fix that could benefit many users. It would also save my client from having to manually update around 60 emails.

Thank you for considering this!