Pause, cancel or delete a campaign

Three different things, from the Actions menu on the Campaigns page.

Pause — stop a send in progress

Pause appears only on a campaign that is actively sending. It stops further sends; the recipients already reached keep their emails.

Click Resume to continue from where it stopped. Nobody is emailed twice.

If a campaign has already stopped on its own it does not need pausing — it needs Resume, and a reason worth reading first. See Why is my campaign paused?.

Cancel send — take a scheduled campaign off the schedule

Cancel send applies to a campaign that is Scheduled but has not started. You are asked to confirm, and the dialog says exactly what happens:

So cancelling is safe and reversible. The buttons are Cancel send to go ahead and Keep schedule to back out — read them carefully, because both mention the schedule.

Delete — remove it entirely

Delete removes the campaign. Unlike cancelling, this is not a way to pause something: the campaign and its record go.

Cancel first if you might want it back. A cancelled campaign sits harmlessly as a draft for as long as you like.

Which one do I want?

• Sending right now and you want it to stop → Pause
• Going out later and you have changed your mind → Cancel send
• Never sending it and want it out of the list → Delete

Next: open Campaigns and check the Status column — it decides which of these three the menu will offer.