User will be able to accept / decline requests sent by other users from an email.

Undisclosed The URL scheme is undisclosed by the publisher of the application. You are encouraged to contact the publisher for more information.
x-callback-url The URL scheme is compliant to the x-callback-url specification. Visit the x-callback-url website
Application homepage:
iTunes link: We're still in development and don't have one yet
HTML Link example: mysaic://?record=14&user=23
Native application URL string example: gmail
Extended example: