Blinkly’s quantum-resistant architecture guarantees end-to-end encryption (even Blinkly cannot decrypt and read emails; so users’ data can never be surveilled or monetized). Only the sender and receiver of the email has access to the private key to decrypt.
Blinkly's email can be ephemeral, meaning encrypted messages expire automatically after a short lifetime (default setting; customizable).
The Blinkly “Kill Switch” allows the sender to send an email and then later delete the email in her sent mail folder causing the email to vanish from the receiver’s inbox.
Blinkly allows users to reply all. Receivers of other end-to-end encrypted email (e.g., ProtonMail) cannot reply all.
Blinkly is a stand-alone platform that can communicate with all other email services; yet, the content of Blinkly emails never live on their servers (e.g., Gmail, Outlook, or Yahoo).
Blinkly is accessible via a web browser and can be deployed in the cloud or on-premise.
Blinkly can be implemented on Blinkly servers or on-premise in your own environment whereas ProtonMail and other email providers run only on their own servers.