I created my Github account using my university email to avail student developer pack , but i wonder what will happen to my account after i graduate , when my university email will no longer be active , will all my contributions be gone ?

Is there a way to link my github with my personal email so that once university email gets deactive all my repos and contribution still be safe and i can there after use my personal email to contribute and all my github history be attached to my personal email ?

NOTE : I also have another Github account created using my personal email , so typically I have 2 github accounts , one with personal email & other with university email

I tried Searching online , but could not find any answer