Google still allows third-party apps scan your Gmail data
Gmail lets third-party developers integrate services into its email platform, such as trip planners and custom relationship management systems. Developers may share data with third parties so long as they are transparent with the users about how they are using the data. The company noted that it has a process in place for identifying apps that misrepresent themselves or aren’t transparent about how personal data is used.
Source: Google still allows third-party apps scan your Gmail data