The .mbx extension is associated with which email client?

The .mbx extension is associated with which email client?

• A. Eudora
• B. Outlook Express
• C. Thunderbird
• D. Apple Mail

Answer: (A)

The .mbx extension identifies a mailbox file format used by Eudora. In Eudora, each mailbox—the collection of messages for a folder like Inbox or Sent—was stored as a single file with the .mbx extension (for example, Inbox.mbx). This makes the extension a clear indicator of that client’s storage style. Other email clients use different formats: Outlook Express uses .dbx files for its folders, Thunderbird uses the mbox format (typically stored as files named after the folder without a .mbx extension), and Apple Mail uses mailbox bundles that end with .mbox in a macOS environment. So the presence of .mbx most strongly points to Eudora.

The .mbx extension identifies a mailbox file format used by Eudora. In Eudora, each mailbox—the collection of messages for a folder like Inbox or Sent—was stored as a single file with the .mbx extension (for example, Inbox.mbx). This makes the extension a clear indicator of that client’s storage style. Other email clients use different formats: Outlook Express uses .dbx files for its folders, Thunderbird uses the mbox format (typically stored as files named after the folder without a .mbx extension), and Apple Mail uses mailbox bundles that end with .mbox in a macOS environment. So the presence of .mbx most strongly points to Eudora.