Attachments are encrypted as well they are stored on Criptext's Amazon Web Services servers though the encryption keys for those are saved on user devices. Encrypted mailsĬriptext says that every email is encrypted with a unique key. If it isn't delivered within 30 days, it's deleted from the server as well. The email is stored on the server until it is delivered in this case. The only exception to this is when the message is un-deliverable say when the recipient's device is offline. How does this work? According to the official documentation, Criptext passes the mail through their server for a moment and it's deleted once the mail is delivered.

It is not cloud-based like Gmail or Outlook Criptext emails are not stored on servers permanently, they are only stored on your device using end-to-end encryption. There is something you should know about Criptext.