I\'ve been using Google Wallet for handling our subscriptions for some months now. Everything seemed to work fine but I just found out that Google Wallet does not send subscript
No, there is currently no way to find out if a subscription has been cancelled without manually looking at each order. See: https://stackoverflow.com/a/20556528/123444
It was broken (at least in sandbox for me), but is now working again. You should get a SUBSCRIPTON_CANCELED
failure postback if/when a user cancels his/her subscription.
My Sandbox buyer (I cancelled a subscription as a buyer) and got an email:
Here's the failure postback for it (sandbox ):