Muting silences alerts, not the group
A group chat usually has two separate jobs: carrying messages and notifying you that new ones have arrived. Muting changes the notification setting on your device or account; it does not tell the other members to stop writing, and it generally does not remove you from the conversation. Messages continue to reach the chat while its alerts stay quiet.
That separation is useful because notifications are only signals about activity, not the activity itself. You can check the thread when you choose instead of having every incoming message interrupt whatever you are doing.
Why the backlog can grow so quickly
Group messages arrive independently of whether you open them. If several people are chatting at once, each reply adds to the thread, and a flurry of short messages can produce a long unread stretch even when the discussion itself is brief. Some apps also count reactions, replies, or other activity differently, so the unread marker may not map neatly to one continuous conversation.
When you return, the app loads the messages you missed and marks them read as you view them, though the exact behavior depends on the service and its settings. Muting does not usually summarize or filter the backlog: you may need to scroll through it, jump to the latest message, or search for a detail.
Quiet is not the same as leaving
The distinction matters when you want fewer interruptions without giving up access. Muting keeps the conversation available; leaving a group changes your membership, and archiving or hiding a chat—where an app offers those options—changes how easy it is to find, not necessarily whether new messages arrive. The controls differ by service, so it is worth checking what a particular app’s mute setting covers and how long it lasts.
In practice, muting trades a stream of alerts for a later catch-up task. The conversation keeps moving; you decide when to rejoin it.
