Zero-access encryption is a method to protect data while it’s at rest, which happens to be how Courier encrypts your item data. Everything works unless the app leaks the master password to the Internet somehow.
Hopefully this never happens, but occasionally it does. Cases in point are bugs and bad employees. Wouldn’t you feel better knowing that the app handling your precious data designs its code to NEVER connect to the Internet? At Digital Appworks we always welcome the challenge to have our code scanned by a software lab to verify this very important fact! As Ronald Reagan once said, “Trust, but verify!”