Emails to external recipients (non-Tutanota addresses) are encrypted with AES-128 – a preshared password is used for sending an encrypted message to an external recipient.Īll data stored in Tutanota is encrypted according to a zero-access standard both encryption and decryption occurs locally on users’ devices and Tutanota has no access to stored data. Registration for a Tutanota account requires no personal information such as mobile phone numbers or real names.Įmails between Tutanota users are automatically encrypted end-to-end using a hybrid combination of AES-128 and RSA-2048. Tutanota is a privacy-friendly encrypted email provider operating out of Germany.

Zero server knowledge encryption for data.

'For example, if you are a journalist with a confidential source,' writes the company in a blog post, 'it is very important to protect the phone number or address of that source. ProtonMail notes the many benefits of this sort of protection.

Email addresses are not protected this way, says the company, so that it can filter your emails and know where to deliver your message. You can encrypt specific fields of your contact data, including phone numbers and note fields. The service works within ProtonMail's email system, and includes both zero access encryption (which means that even ProtonMail won't know what's stored on their servers) and digital signature verification (which makes sure no one else has tampered with your data).

Now the company is offering ProtonMail Contacts, which it's calling 'the world's first encrypted contacts manager.' A couple of months ago, ProtonMail created a free tier for its VPN service, too. About a year and a half ago, ProtonMail opened up its previously invite-only beta encrypted email service to the public, along with a couple of mobile apps.

Protonmail zero access encryption