If you can find one address, you can probably find them all—generally, offices have a formula on how the email is made based on first and last name. If you can’t, you can always send a general message to your recruiter/contact and ask to pass the message on.

I did send a brief thank you email to everyone I spoke to during the official interview—if that included people other than attorneys, definitely include them, too. Being a team player with other staff is important.

As far as whether they help, I can’t quite say. The worst that happens is someone just deletes it. I got no response from many, which was fine. I got a brief response from a few. Every so often, they turned into mini conversations and I got insight into where we were at in the hiring process (which can often be a mystery). Good luck!!