When comparing PGP Encryption vs ProtonMail, the Slant community recommends ProtonMail for most people. In the question“What are the best ways to send and receive secure email?” ProtonMail is ranked 1st while PGP Encryption is ranked 3rd.
Ranked in these QuestionsQuestion Ranking
Pro Can be integrated with multiple email clients
Pro Code available for audit
The original version of PGP is no longer freeware since it was aquired by Symantec, but the source code can still be downloaded for peer review.
Pro No need to exchange private keys
PGP uses asymmetric encryption. One user generates 2 keys - private and public. Another user uses the public key to encrypt the message that can then be decrypted only using first users's private key.
Pro Built-in end-to-end encryption
Pro Privacy respecting
User data is protected by strict privacy laws because all servers are located in Switzerland.
Pro No personal information needed
To create an account you don't need to give any personal information, just choose username, domain, and password. Even the recovery email address is optional.
Pro Open Source
Pro Mobile apps
Apps for Android and iOS available.
Pro Overly Expensive for Desktop Support
Con Can be daunting to set up
no it isn't. is this a troll
Con Still lacks some useful features
At the moment, there is no calendar feature and contact management is quite poor. They will, however, start to work on it.
Con Ties to US Investors
ProtonMail takes money from US Investors
Con No IMAP and SMTP support for basic accounts
Basic accounts are restricted to the Protonmail web client. Support for IMAP and SMTP is available with a paid subscription only, and as such with basic accounts it is not possible to send and receive email with external applications.
Con Overly Expensive for Desktop Support
Con Requires phone number for login
If you sign up over Tor or a VPN, it will require email or phone number verification. Email verification is disabled if you use an email that isn't from Google or Outlook.
Con Encryption Keys are stored server-side
The keys are generated during account creation. Using your existing keys is prohibited and ProtonMail must store and control the private keys. Encryption cannot be secure unless the user controls the private keys.