What is how to unmute messages on messenger?

As an AI language model, I do not have access to the specific features of the Facebook Messenger platform. However, I can provide a general guide on how to unmute messages on Messenger:

1. Open the Messenger app on your device and log in to your account.
2. Find the conversation thread you want to unmute and swipe left on it to see more options.
3. Tap the settings icon (gear icon) located at the top right corner of the screen.
4. Scroll down to find the "Notifications & Sounds" section and tap on it.
5. Check if the "Mute Conversation" toggle switch is turned on. If it is, turn it off to unmute the conversation.
6. If you want to customize how you receive notifications from this conversation, you can adjust the settings under "Notification" and "Sounds" sections.

Note that the steps above may vary depending on the device you're using and the version of the Messenger app.