Using the notes field in contacts, you can also add other information about the contact that will be protected with zero-access encryption. For example, if you are a journalist with a confidential source, it is very important to protect the phone number or address of that source. The addition of encrypted contact fields brings many security benefits. In a blog post announcing the contacts manager, it says the feature is a security benefit especially to those with a strong need to keep sources confidential - such as journalists - although it’s worth noting that any email addresses stored in the contacts manager are not encrypted (so the added security layer only applies to phone numbers and addresses). The new features have been added to v3.12 of ProtonMail’s web client, with the Swiss-based startup saying it’s working on also bringing the feature to its Android and iOS apps. Another neat addition to end-to-end encrypted email client ProtonMail: It’s added a zero-access encrypted contacts manager that also digitally signs the contact info you store in it.

Sign up for protonmail