Facebook mail box

You're referring to the Facebook Messenger inbox!

The Facebook Messenger inbox, also known as the Facebook mailbox, is a feature that allows users to send and receive private messages, photos, videos, and other files with their friends and family on the Facebook platform.

Here are some key features of the Facebook Messenger inbox:

1. Private messaging: Users can send private messages to each other, which are only visible to the sender and the recipient.
2. Conversations: The inbox allows users to have multiple conversations with different people, and each conversation is organized into a separate thread.
3. File sharing: Users can share files, such as photos, videos, documents, and more, with each other.
4. Group chats: Users can participate in group chats, which allow multiple people to communicate with each other in a single conversation.
5. Read receipts: Users can see when their messages have been read by the recipient.
6. Delivery receipts: Users can see when their messages have been delivered to the recipient's device.
7. End-to-end encryption: Facebook Messenger uses end-to-end encryption to protect the content of messages, ensuring that only the sender and the recipient can read the messages.

To access your Facebook Messenger inbox, follow these steps:

1. Log in to your Facebook account.
2. Click on the Messenger icon (a blue speech bubble) at the top of the page.
3. Click on the "Inbox" tab.
4. You will see a list of your conversations, with the most recent messages at the top.
5. Click on a conversation to view the messages and files shared within that conversation.

I hope that helps!