Looking for a MU2 ready Patient Portal

I have a customer who is looking for a MU2 Patient Portal with secure email. For some reason he doesn’t want to use ZH Healthcare. Does anyone have a suggestion?

you could ask @sunsetsystems who might be upgrading the CMS portal

https://chat.open-emr.org/channel/general?msg=8nMdxgwK69qeo8GBW