Proton Free users are limited to three custom folders. Proton itself sends account-related emails, security notices, product information, service updates, and other Proton communications.

If a Free user creates a folder specifically for Proton's own messages, that uses one of the three available custom folders, effectively leaving only two folders for the user's own email organization.

Please provide a built-in Proton or Proton Account system folder for Proton-generated messages that does not count toward the three custom-folder limit.