Reply To: How to Fix Error “No Valid MBOX file found” in MAC Michael Scofield ~ Modified: May 15th, 2017 ~ ~ 1 Minute Reading Home › Forums › How to Fix Error “No Valid MBOX file found” in MAC › Reply To: How to Fix Error “No Valid MBOX file found” in MAC May 15, 2017 at 12:11 pm #4203 Score: 0 Michael ScofieldModerator Karma: 20 pts Hey, you can find your Mailbox files at below location: Location: ~/Library/Preferences/com.apple.mail.plist Search