One of the comments that people have made about the @stop command is that they forget to resume receiving messages from a group after stopping them. In order to address that, we’ve made the following changes to @stop:
@stop will stop messages for 1 day. If you want to have messages for a group only go to a specific channel, you can set this in your group settings.
Issuing a general @stop for all groups will switch your primary contact to the web (if you have a web account)
Issuing an @stop command for one group will switch your group override to your web contact (if you have a web account)
Issuing an @stop command if you do not have a web account will stop messages indefinitely