Not right now. In a couple months Fitbit should be releasing another OS update to the watch that will add the ability of sending quick replies after you receive a text message notification.
I'm assuming you'll be able to change the default text message app to something like Whatsapp or Facebook's Messenger so you should be able to reply to one of those two as well.
However, Fitbit hasn't shown any signs of releasing something like that for emails. It really makes no sense, if you ask me... replying to an email is something that you usually take your time to do. Having an option to send "quick replies" via email wouldn't be as useful.
狂乱 Hey Kids!
