On desktop (MacOS and Windows) and Wire for Web:

In the conversation list:

1. Click Settings  to show your profile.
2. Click Options.
3. Under SOUND ALERTS, click All, Some, or None.

To learn more about how to modify your device notifications, click here.

On mobile devices:

In the conversation list:

1. Tap your Profile in the upper left corner.
2. Tap Settings .
3. Tap Options.
4. Tap Sound and choose: ALL; FIRST MESSAGE, CALLS AND PINGS; or NONE.

To learn more about how to modify your device notifications, tap here.