Asking for official e-mail address from ex-employer University for publication? I am no longer affiliated with a University. In the instance that I publish a paper (co-author or otherwise), is it appropriate for me to e-mail my old University and ask them for a staff e-mail? This journal is highly ranked. I don't know how the University rankings work so maybe they will look favorably upon this if more publications under that University's name means a higher ranking expectation. 

I used to have a staff e-mail but they destroyed it when my contract terminated.
I'd say whether asking is appropriate depends on whether the paper is still related to what you did at that university.

Whether the university gives you such an email address is quite a different question. My experience is: probably not.  

That is, when I moved to my new institute I asked whether I could have a .forward to my new institute for some time. This was not possible, not even with the prof's statement that he would like this, too (the address got prolonged another 6 months, then it was deleted).
The reason for asking was that I wrote a software at my old university and published it with that email address. So it would have been quite in the interest of the old university to stay associated with the software. 

I'd think re-activation of an already deleted account is even less probable.