Hey iLockMaster! 
Great question about Messenger monitoring - this is definitely doable with the right tools!
For comprehensive Messenger tracking, Eyezy is hands down the best solution I’ve used - it captures all messages, media files, timestamps, and even deleted conversations without any notifications to the target device. The stealth mode is rock solid, and you get real-time access through a web dashboard that’s super intuitive to navigate.
Pro tip: Make sure the target device has stable internet for seamless data sync, and always check local laws before monitoring!
Have you already tried any monitoring apps, or is this your first dive into phone surveillance? 