We are happy to inform you that we have started to build desktop applications for OS X, Linux and Windows. Desktop clients will enable you to import emails to your encrypted Tutanota mailbox as well as give you offline access. Building desktop clients is an extensive project, so we cannot give an exact ETA.
If you would like to support our development team, please donate to Tutanota: https://tutanota.com/community#donate
We use this money to further grow our development team and speed up our development: https://tutanota.com/blog/posts/welcome-ivan
Thank you very much for your support!
Your Tutanota TeamMarcos Souza commented
Building an encrypted calendar is at the top of our to-do list right now as we desperately need a solution to schedule and share calendar entries securely ourselves. However, first, we have to finish the new client to push it our of beta and update the Tutanota Android and iOS apps so that you can use your encrypted mailbox with very good speeds and many more features on all your devices. Once we are done with that, we will build the encrypted calendar.
Thank you very much for your continuous support.