This email can be seen during the Merovingian mission path of chapter 1.1.2 at least?
Email from a Disaffected Redpill
BEGIN TRANSCRIPT (female caller's voice): Hello, Tyndall. I hope this old dead number still works, for both of our sakes. This is Danielle. I know you'll recognize my voice. There are new Agents in town, different somehow. Since the truce I've been seeing them, and they're way too interested in the hardlines. You need to have somebody look into this. That's all i'm giving you, but it should be enough. Goodbye.