Third-party app developers can build services that work with Google’s Gmail, for doing things like helping you find a good shopping deal or manage travel. Some of those developers can read private emails — and have let their employees read them — according to a report Monday by The Wall Street Journal.

Specifically, the Journal’s report mentioned two apps. One of them is Return Path, an app that analyzes users’ inboxes and collects data for marketers, according to the Journal. The newspaper said Return Path employees read about 8,000 user emails two years ago to help develop the company’s software.

The other, called Edison Software, which helps users manage their email, reportedly let its employees read “thousands” of emails to help the app train its “Smart Reply” feature. Read More