Messenger OnlyUnread is a Chrome extension developed by bfav that aims to solve the issue of unread messages disappearing in Facebook Messenger. As many users of the platform may have experienced, once a message is read, it sinks to the bottom of the conversation, often making it difficult to locate and respond to unread messages.

With Messenger OnlyUnread, users can easily hide messages that have been read, allowing them to focus solely on the unread messages. By clicking on the "Hide Read" button, the extension will start hiding all the read messages and refresh the conversation to fetch more unread messages. This feature ensures that users can easily access and respond to the most important messages without distractions.

Additionally, the extension provides a "Pause Hiding" option, which allows users to temporarily pause the fetching of new messages while still displaying the unread messages at the top. This feature can be useful when users need to focus on a specific conversation or want to take a break from receiving new messages.

For those who prefer to see all the messages again, Messenger OnlyUnread offers a "Show All" button, which restores the conversation to its original state, displaying both read and unread messages.

Overall, Messenger OnlyUnread is a valuable Chrome extension for Facebook Messenger users who want to prioritize their unread messages and improve their messaging experience.