Just like coal miners used to bring a canary into the mines to detect toxic fumes, a honeypot can give you an early warning that someone is accessing your personal files.
In the cybersecurity world, honeypots are designed to appear as if they contain valuable information, but in reality, they are traps. Hackers or intruders will inevitably find and trigger them, so the owner is immediately notified.
This is exactly what BearMail does. The email we send you is your personal canary honeypot. When a hacker or other unauthorized user accesses your emails and opens or clicks the link in the honeypot email, you will immediately receive a notification.