Just enter your user details and you'll always have all your 1 & 1 emails mobile. - Optimized for 1 & 1 mail - Mobile access to your 1 & 1 mailbox of your internet contracts - Easy handling Have fun with the 1 & 1 Mail App wishes you Your 1 & 1 team Note: This app is not compatible with IONOS by 1 & 1 contracts.