You can format the text with shortcuts via your keyboard (Ctr+b, Ctr+i). We still have to implement the according buttons.
I can't use keyboard shortcuts for text formatting for some reason. In Firefox, I just get "page info" with "ctrl + i". And I can't find another way to make text italic or bold in a new email.
Yeah, a built in spell checker would be nice. I like the fact that everything I type isn't being sent back to google for spell checking and spying... but I also don't want to spell "accommodate(?)" wrong every time.
I still chat with friends on google hangouts, and sometimes use Chatsecure on my tablet... but a built in encrypted chat in Tutanota would help me bring them on board here.