Someone ask me how to enable mail enabled a public folder in Exchange 2013. Here are the steps
1. You must have a Public Folder Mailbox and some public folders created. If you need help click here
2. You should see something similar to this screen
3. Open your Exchange Management Shell (EMS) and Execute the following command Enable-MailPublicFolder “TopLevelPFChildPF1” (Replace the names with your names)
4. To see the email address execute: Get-MailPublicFolder ChildPF1 | Select *emailaddress | fl
5. If you like the GUI , go back to ECP and check the folder