A huge apology to our customers who saw a delay in the delivery of their campaign today. The Campaign Monitor data centre suffered a major blow several hours ago when it apparently wore a direct lightning strike.
There was in fact only a very short outage until backup systems kicked in, but this was still enough to delay many campaigns. All systems have since been restored and all campaigns in the queue are now being delivered. You will receive a confirmation email as soon as your emails are delivered.
My sincere apologies for any inconvenience caused, I've been assured this is a freak occurrence (hey, it was a direct lightning strike). A big thanks to everyone who got in touch with us about this, we're getting back to each of you as I type this.