Is ProtonMail more secure than Gmail? Yes. When it comes to data protection, end-to-end encryption is king. ProtonMail All data stored on it is encrypted so neither hackers nor ProtonMail employees can read the contents of your messages. Protonmail FAQ Can the police track ProtonMail? Do I need a phone number to register a ProtonMail mailbox? What does a ProtonMail address look like? Is ProtonMail legal in the US? How many free ProtonMail accounts can I have? Does Protonmail work in China? What username should I use for ProtonMail?