I wrote to Chase on their 'secure message portal', which feels like it is straight out of 1995. I told them I'm out of the country and cannot send mail.
I told them that I am rejecting the agreement to arbitrate. I also said that since their message portal feels official, this would be what I would use as proof of my opt out in court, if the need arises. I saved some screenshots as well.
They have updated me once already to say that they are still working on a response.
We do link to our site on the top and I can talk about this ad nauseam but suffice it to say we have a plan to build an (actual) bank from the ground up and we're trying align our incentives with the customers by doing things like paying customers higher interest rates for saving more instead of spending more etc.
tbh I'm not trying to use this as a platform for advertising but I'm happy to chat if you want to email me. zach [at] hmbradley.com