How to contact owner of lost+found iPhone with Activation Lock?

Found an iPhone 13 on the beach (in a foreign country while on vacation). It was actually below the tideline and so was in the water, and looked like it had been underwater for a long time. Tried to turn it on, but it was dead. Instead of just throwing the phone back, I decided to hang on to it and see if I could dry it out. Days later, back at home, I removed the SIM card tray to give the interior the ability to breathe and release moisture, and left it in the hot sun during the day for a few weeks. I tried periodically to restart, but with no luck. Eventually, after nearby a month drying in the sun on a windowsill, I tried recharging the phone -- and it came to life! It charged up and started.

However, the startup screen now says that the phone has an Activation Lock: "iPhone Locked to Owner. The location of this iPhone can be seen by its owner 'm••••@hotmail.com," with the email address given exactly like that: "m••••@hotmail.com." Otherwise, there is no emergency contact info set up on the startup screen.

So: Is there ANY way for me to find out the contact info for the original owner, so I can either send the phone back to them, or (if they don't want it any more) ask them to remove the phone from their iCloud Activation Lock? Otherwise, the phone is completely useless to them and me.

Presumably, the info exists -- somewhere in Apple's databases is the name and contact info of the owner. But I assume there's no way for me or anyone to retrieve that info.

And if I can't find their email address, is there any way for me to reveal my contact info to the owner, so they can contact me if they want? It also says that the original owner can now see the recharged phone's location on their "Find My" app -- but that still doesn't let the original owner know my contact info.

Any solution to this dilemma? I'm sure this identical problem has cropped up countless times over the years with lost iPhones. But without a solution, the phone is a useless brick, despite being brought back to life.

[Re-Titled by Moderator]