Service page: https://melroselabs.com/services/rich-messaging/

The Melrose Labs Cards service enables the creation, hosting, communication and management of cards with visual and audio content, and actions. Cards are used by businesses and other organisations to communicate effectively with staff, customers or anyone.

Create a card using a card template and then include the resulting Cards service short URL for your card when you distribute via email, text, chat or QR code. The Cards service hosts your created card for access using an application or viewing directly on a user's mobile device, tablet or computer. Cards supports Adaptive Cards and other card technologies.