My email is used to sign to facebook [Edited]

@XfinityRaf​ Yes, I received a email stating that [Edited: "Personal Information"] would be deleted.  I ask not to do so because I use this address for my log-in to facebook.  Please do not delete.

Hi there, @user_ningop Thank you for reaching out. Xfinity will not automatically delete your email account if you use it at least once every 12 months. However, if you don't sign in for more than two years, your account will be closed after a 90-day notification period. -Richard

I sign to this account every day at my facebook account.  does this count/

@user_ningop​ 

I sign to this account every day at my facebook account.  does this count/

No, it doesn't count.  You need to sign in on the email webpage in order to keep your email alive.  I suggest signing in at least once a month in order to clear out old/spam email.  https://connect.xfinity.com/appsuite   If you haven't signed in to that email in a while  you may need to change your password in order to get in.