@Tutanota Done, I just migrated from Proton to Tuta since I want a lightweight email client, Proton binds several services together, causing distraction.
@Tutanota Interestingly, your invoice didn't log the detailed payment info to pay for Tuta: the cardholder's name and full card number. That means Tuta has better privacy and anonymity. On the other hand, if bad actors use Tuta for illicit activities, it will be difficult to trace the suspects.