WOW. Hope you are better at encryption than you are account management. Manually approving accounts because you are "so skeered of spam" is so 1990's.
In case you geeks don't now this, ALL IPV4 IP addresses are "previously owned" and so you're gonna get multiple sigh ups from an IP address. Especially since my IP is not static and changes daily at the whim of my IP.
"Sorry, you are currently not allowed to send or receive emails because your account was marked for approval to avoid abuse like spam emails. The Tutanota team will approve your account within 48 hours."
We are continously improve the signup process. However, we also have to protect existing users from spammers that sign up…
"Hang on guys.....let me go reboot the router so we can get assigned a different IP address by CenturyLink so we can sign up."