Hi! One of my recommenders just submitted his letter of recommendation to me through LSAC, and I realized that LSAC shows that he used his personal email instead of the institutional one. I contacted him and he said he is about to retire and his institutional email will be deactivated, so he wanted the universities to have an updated email address if they wanted to talk to him. He said he used the official letterhead and explained this in the letter, and that he thinks it should not be an issue because his personal email is not a regular gmail.com but rather something like name@lastname.com. Do you think this is okay or the universities might still think this is a fraud? He is my third recommender - I will also have LORs from two current university professors. Thanks!

I think this will probably be fine as long as it’s on the official letterhead, as mentioned. Is his first and last name listed in the faculty/department section of the university website? If so, it will likely be even more fine.

It should be ok as not all applicants or their professors have access to an institutional email address. I didn't, and none of my recommenders did - so they submitted everything from their personal addresses.
I applied to seven schools, including Harvard, Yale, NYU, and Columbia, and none raised any objections.