There is no service that does this to my knowledge.
What’s needed is a site where you can register your personal info, and then when a new arbitration event is “seen”, the site adds it to its database, notifies everyone in their database of the potential action required, and then gives you the ability to complete a template (with perhaps an account number or such) with your personal information prefilled. This would then be sent to the counterparty with a record kept in the event they dispute the opt out request.
I suppose you could notify users based on inbox activity if your could coorelate arbitration notices to inbound emails through domains and their integrity into (DMARC, etc). Check out the newsletter app Meco for what the UX around their Gmail integration looks like.
Also, consider contacting the FTC and filing comments that instituting arbitration requirements should require reporting to the FTC or other agency; you’d then have a central source of truth to crib off of.
