Any plan on follow-up in the compose window? Rated 5 out of 5 stars

Thanks for the brilliant idea and hard work!!! 5 star.I see it can follow up in the mail list window and separate reading window.Do you also plan on the follow-up in the compose window? I think that's useful also.
Is it possible to place small view today/pending buttons to the status bar or tab bar to save some space, as Lightning does?
Have a nice weekend.