?? It comes with a rechargeable battery.
I'm not surprised. It does appear to be a US leaning application. The current US based mail servers are simply not trustworthy anymore. So my privacy choices were Proton mail or Tuta mail.
Tuta.com is out of Germany. I've had it about 8 years ( 2 Paid ) and never had any problems.
So you are basically asking a US immigrant his views on US immigration then.