If you have a scheduled mail merge, it will show under the "GMass Scheduled" label. To cancel and prevent it from sending at its scheduled time, just remove the "GMass Scheduled" label from the Draft, and that will prevent GMass from seeing it. The scheduled job will error out and prevent the mail merge campaign from sending.
This also applies to a large campaign that has been set to send over multiple days. If after a couple of days, you decide you don't want the rest of it to send, just remove the "GMass Scheduled" label, and further sending will be prevented.
This also applies to a large campaign that has been set to send over multiple days. If after a couple of days, you decide you don't want the rest of it to send, just remove the "GMass Scheduled" label, and further sending will be prevented.