Apple mail side preview not working

Frustrating! The "Side Preview" feature in Apple Mail allows you to preview emails on the right-hand side of the screen without having to open them. If it's not working for you, here are some troubleshooting steps to help you resolve the issue:

  1. Check if Side Preview is enabled: Go to Mail > Preferences > Viewing, and make sure the "Show preview" checkbox is selected.
  2. Restart Mail: Sometimes, a simple restart can resolve the issue. Quit Mail, then relaunch it.
  3. Check for updates: Ensure that your Mac is running the latest version of macOS and that Mail is updated to the latest version.
  4. Disable and re-enable Side Preview: Go to Mail > Preferences > Viewing, and toggle off the "Show preview" checkbox. Wait for a few seconds, then toggle it back on.
  5. Check for conflicts with other apps: Some third-party apps might interfere with Side Preview. Try closing any apps that you suspect might be causing the issue.
  6. Reset Mail preferences: Go to Mail > Preferences > Reset, and select "Reset all preferences". This will reset all Mail preferences to their default settings.
  7. Check for corrupted email data: If you've recently imported or exported emails, try deleting the email data cache by going to ~/Library/Mail/V2/MailData and deleting the Envelope Index and Message Database files.
  8. Reinstall Mail: If none of the above steps work, you can try reinstalling Mail by going to the App Store, searching for "Mail", and clicking "Install" next to the "Mail" app.
  9. Check for issues with your email account: If you're experiencing issues with a specific email account, try checking the account settings or contacting your email provider to see if there are any known issues.
  10. Contact Apple Support: If none of the above steps resolve the issue, you can contact Apple Support for further assistance.

I hope these steps help you resolve the issue with Side Preview in Apple Mail!