Facebook will be shutting down its @facebook.com email service that let users create email addresses and received emails in their Facebook inbox.
To be honest, this had to rest in peace because the number of times you probably used your firstname.lastname@example.org very few time or never at all.
So effective today, any emails sent to your Facebook email will be sent to you maim email address. However there is an opt-out option that lets you tern it off.
Unfortunately it’s easy for stalkers to figure out your Facebook email address much as Facebook only shows it to your friends and this could probably fill your primary email address with junk.
Source: The Verge