As a user, I want to be able to view the history of all of the emails that I have sent on any iOS device that I own.
It is possible for a user to be logged into the same iCloud account across multiple iOS devices (iPhone, iPad, etc.), and so having history sync using CloudKit is a possible solution as it will allow the user to be able to view their history on all of their devices. Since History is only a Pro feature, the user will need to be a Pro user, but since it’s verified using Apple’s IAP, they are able to enable Pro features on all of their devices through their iCloud account.
https://developer.apple.com/icloud/cloudkit/
As a user, I want to be able to view the history of all of the emails that I have sent on any iOS device that I own.
It is possible for a user to be logged into the same iCloud account across multiple iOS devices (iPhone, iPad, etc.), and so having history sync using CloudKit is a possible solution as it will allow the user to be able to view their history on all of their devices. Since History is only a Pro feature, the user will need to be a Pro user, but since it’s verified using Apple’s IAP, they are able to enable Pro features on all of their devices through their iCloud account.
https://developer.apple.com/icloud/cloudkit/