Unfortunately, you can't send email directly to or from a Yahoo!7 Dating Mailbox. The Yahoo!7 Dating Mailbox only allows private correspondence between Yahoo!7 Dating users.

Because the Yahoo!7 Dating Mailbox is not like traditional email, you can neither forward your messages to another email account, nor receive your messages in another email account. Think of this system as a private message board associated with profiles rather than as a full-featured email system.