There is currently a widespread AWS outage affecting several components of the Constant Contact suite. This includes requests made to our public API, which may return '503 Service Unavailable'. This issue is not specific to Constant Contact, but we are monitoring the situation and will provide updates as we know more.
Aarron G. API Support Engineer Did I answer your question? If so, please mark my post as an "Accepted Solution" by clicking the Accept as Solution button in the bottom right hand corner of this post.