When comparing The Bat! Professional vs ProtonMail, the Slant community recommends The Bat! Professional for most people. In the question“What are the best e-mail clients for Windows?” The Bat! Professional is ranked 8th while ProtonMail is ranked 10th. The most important reason people chose The Bat! Professional is:
Has a very small installation footprint.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Fast and lightweight
Has a very small installation footprint.
Pro Granular control
When you need that setting that does that certain thing, you'll most likely find it in The Bat and nowhere else.
Pro Built-in end-to-end encryption
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 Privacy respecting
User data is protected by strict privacy laws because all servers are located in Switzerland.
Pro Open Source
Pro Mobile apps
Apps for Android and iOS available.
Cons
Con Only available for Windows
Con It's all about cash - support, new licenses policy, bugs. Not worth buying.
Two programmers coding - this means every release is full of bugs sometimes making this app unusable. Dev version is testing via community.
Con Javascript-intensive Webmail
Free accounts are required to use Javascript webmail and encryption is done in the browser. Javascript cryptography is harmful for security and should not be used.
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.
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 Not fully Open Source
