I co-wrote a paper with a colleague when we were both at the same institution - Uni 1. He is still there, but I am now at a different institution - Uni 2 (but same city - think Uni of Birmingham and Birmingham City Uni).
Would it be ok to give my personal email address as my contact email? I think it might look a little odd/confusing to give my Uni 2 email when I am going to use Uni 1 as my affiliation?