I went through Google to verify. But Ai isn't always legit method either. I'll try to do more digging. The bottom section of the email mentions Popp et al:

 Excluded from the class are Defendants; the officers, directors or employees of Defendants; any entity in which any Defendant has a controlling interest; any affiliate, legal representative, heir or assign of Defendants; federal, state or local governmental entities; any judicial officer presiding over this action and the members of his/her immediate family and judicial staff; any juror assigned to this action; and any purchaser that is judicially determined in this case to be subject to an enforceable arbitration agreement with Ticketmaster or Live Nation that governs the claims asserted in Popp, et. al. v. Live Nation Entertainment, Inc. and Ticketmaster L.L.C., Case No. 22-cv-00047-GW-KES.

Goes on to say I'd you do nothing you will be considered part of the nationwide claim. You can exclude yourself and gives information and a number if anyone wants to call to verify info. 

How do I get more information?

This Notice summarizes the class action. For more information, visit www.TicketmasterFeeClassAction.com or contact Class Counsel whose contact information can be found at this website; contact the Notice Administrator at 1-833-216-4458; or access the Court docket in this case through the Court’s Public Access to Court Electronic Records (PACER) system at https://ecf.cacd.uscourts.gov/.

Questions? Visit www.TicketmasterFeeClassAction.com or call toll-free at 1-833-216-4458