It’s fairly simple
NONE of your contact data or email messages are shared to us, or shared to a third party by us.
The GroupShot app does request access to the contacts in your addressbooks, to load and save contacts and group information- but it doesn’t store or send it anywhere other than to your addressbook.
A small amount of relevant information is included in support emails sent to us, for diagnostic purposes in solving any problems. (You see everything included, before you tap “Send”.)
GroupShot uses RevenueCat for subscription support. This checks purchase history from users for the purposes of Analytics and App Functionality. This information is anonymous, and is not linked to a user ID.
If you have any questions I’d be happy to help, please email firstname.lastname@example.org