.mbox file: how to open it on Windows

2 Windows apps register the .mbox extension. Install one of them to open the file with a double-click.

About the format

Format

Mailbox file

MIME type

application/mbox

PRONOM identifier

fmt/720

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• G
  Gpg4win

  A secure solution for file and email encryption.

  Open source 5.1.1
• G
  Gpg4win (Beta)

  A secure solution for file and email encryption.

  Open source 5.0.0-beta395

Related guide: Change the default app for a file type in Windows