This will be added with the new app by the End of April / beginning of Mai 2018.
Any progress on 2FA and the iOS App. This is a must have IMO.
I'm also having difficulty logging into Tutanota mobile with 2FA via Safari on iOS.
I would love this feature as well.
I would support different identities (and signatures) for each alias. Fastmail does a great job with this. I hope Tutanota implements this asap.