Mac Mail Version 13.4 (3608.
MacOS 10.15.4
I have Microsoft Teams Version It was last updated on 3/27/20.

new file set to plaintext 

I tried pasting text to a BBEdit file, lots of empty space

Pasted into textedit

and by golly, set new messages to RTF, and it worked fine in Mail. Who woulda thought.

Your Mac Fu crushed my 7-bit ASCII sword this time. Thanks, Andrew
On Apr 10, 2020, at 2:27 PM, Andrew Hendrickson <[log in to unmask]> wrote:

Hi Wes-
What email client are you using?  And are new messages set to allow HTML or just plain text?