There are AR devices in the form of sunglasses now, but the displays and experience pale in comparison to VR headsets.
We're still a few more generations away from VR headsets shrinking and AR glasses improving for this experience to be universally enjoyable.
Linus Tech Tips did a review of it, so it's real. I have high hopes.
Avoid using Tuta, I am talking as a person with more than 4 years experience using their product. Its search extremely bad, UI is so simple and everything is unnecessarily big, not event possibility to add any label.
They barely improved their product within my >4 years of usage. I have already migrated most stuff to another mail provider.