When Mac users search for an emil address nothing happens or its list only old search results.
Open Terminal app and type or paste the following command
sudo defaults write /Library/Preferences/com.apple.security.appsandbox UnrestrictSpotlightContainerScope -bool true
Sometimes this issue might happened because of the lost or removed file.
This terminal command create /Library/Preferences/com.apple.security.appsandbox.plist file with right content.
Also try other suggestions like reindexing spotlight database and recreate message indexes in Mail app.
SEE ALSO : Apple mail not showing inbox unread & total count, fix
Also remove some unwanted app like ‘RAR-Extract by Enolsoft which cause mail won’t search issue.
- From the Email menu navigate to Mail Preferences and click Advanced tab.
- Uncheck the check box named “Automatically detect and maintain account settings” for each mail account listed.
- Close and reopen Email again.
If you knew any other solutions for Yosemite Mail is unable to list search results issue, inform us via comment.