How to bounce an email in mac mail version 9

Bouncing an email in Mac Mail version 9 (also known as macOS High Sierra or earlier) is a bit different from newer versions of Mac Mail. Here's how to do it:

  1. Open Mac Mail and select the email you want to bounce.
  2. Click on the "Edit" menu and select "Mark" > "Bounced".
  3. A dialog box will appear asking if you're sure you want to bounce the email. Click "Bounce" to confirm.

Alternatively, you can also use the keyboard shortcut:

  1. Select the email you want to bounce.
  2. Press the "B" key on your keyboard.
  3. Confirm that you want to bounce the email by clicking "Bounce" in the dialog box that appears.

Note that bouncing an email will send a notification back to the sender indicating that the email was undeliverable. This can be useful if you're trying to clean up your inbox or if you're experiencing issues with a particular email address.

It's worth noting that in newer versions of Mac Mail (version 14 and later), the process of bouncing an email is slightly different. You can find more information on how to bounce an email in those versions by searching for "bounce email in mac mail" online.