Forward up to 20 email accounts to another email address. Mail Forward allows you to forward mail from up to 20 Microsoft Hotmail or standard POP e-mail accounts to any e-mail address. Mail Forward works by accessing your Microsoft Hotmail In Box or POP mailbox and forwarding each piece of mail through your SMTP mail server. As each message is successfully forwarded, it is cleared from the Hotmail In Box or POP mailbox. The Hotmail or POP account e-mail address is used as the return address for the forwarded mail, so if the mail is undeliverable it will be bounced back to the original account.