How do I delete a mailer I just submitted?

I accidentally sent a piece of mail from my desktop, mobile, zapier or webhook, how do I cancel it?

Once you order a single mailer you can't stop it.
It's like sending an Email - It just goes...

If you add a record to a campaign and wanted to stop, simply log into the desktop, head over to Contacts and search the record.
If you delete it, they will not be apart of the campaign.

If you want to cancel the campaign you can. Simply click the trashcan.
However there are no refunds or credits given.