UK ISP Three is blocking private email service Tutanota

End-to-end encrypted email provider Tutanota is being blocked by Three UK, a United Kingdom (UK) internet service provider (ISP).

According to Tutanota, the block has been in place since November and it has had “constant complaints from ThreeUK mobile users who were unable to access their encrypted Tutanota mailbox.”

Tutanota said that other email services have not been blocked by Three UK, despite the ISP’s claim that “any email account that you generate needs a 18+ confirmation.”