While you're at it, please make the appearance of a chosen font while writing a message exactly match what the receiver(s) will see. Right now what you write appears tiny as you write it but will appear larger and often different in other ways in the sent message. One should always see exactly what the readers will see when one composes a message.
I really don't like waking up one day and finding my email client looks way different than the day before. You changed my font and its size and the spacing is entirely different in the viewing pane, when showing the list of messages.
I can't seem to change any of this. There are fields to make the attempt, but no way to save changes.
There should also be a way to revert to the legacy look, for those of us who don't want you pushing what you think is right on us.
It wasn't broken. I don't appreciate your "fixes".