Pausing or Resuming the E-mail Queue
You can pause the outbound e-mail queue. When the queue is paused, e-mail messages accumulate in the queue and remain there until you resume queue processing or force-send individual messages.
To pause or resume the e-mail queue, follow these steps:
From the Sidebar, navigate to Notifications > Notification Queue.
To pause the queue, under Queue Status, click Pause.
NOTE: While the Notification Queue is paused, the Desktop App informs users that the queue is paused, and displays who and when paused the queue.
To resume e-mail queue processing, click Resume.