Over the last few days we have been implementing a brand new load balancing system for both Campaign Monitor and MailBuild to keep things purring along even faster and add another layer of redundancy to our network. Unfortunately, a change related to that upgrade last night unexpectedly caused a problem that meant some of you guys were unable to access your campaigns or import new ones over a period of several hours.
First things first, these errors did not affect any of your sent campaigns, reporting or subscribe forms, so your subscribers wouldn’t have noticed a thing.
As soon as the issue was spotted our team resolved it. Please accept our sincere apologies for this unacceptable outage, we certainly understand how frustrating this would have been for many of you. Thanks also to the many customers who were kind enough to bring this to our attention as soon as they spotted it, we appreciate it.