You may or may not have used it (the folks at Stuff certainly didn’t) but now it is going away. Facebook has said that they will be retiring their @facebook.com email service, getting the news out via notifications to some users. It’s unsurprising that Facebook is putting the service out to pasture, since “Most people have not been using their @facebook.com email address”, according to a Facebook spokesperson.
If users have been using their Facebook email addresses for the social network, emails sent to it will be forwarded on to the primary email address associated with the profile, a feature which can be turned off if users feel the need. If there is no other email address attached to a given account, then messages will not be forwarded at all.
As The Verge points out, this does mean that some users will find that people are emailing to their unrelated accounts where previously they were only able to reach that specific user over Facebook’s service. Turning off the forwarding feature is the final step in saying goodbye to your Facebook email account, while the company will instead be devoting resources to focusing on their “…mobile messaging experience.” That probably means WhatsApp is going to absorb any bits of @facebook.com that are left over once the shutdown is complete.
Source: The Verge