Had to help with someone out today who was trying to call the Mailbuild API from ColdFusion. It’s a webservice and was proving a little annoying to get going, but after a bit of playing the final code looks like this.

 params = structNew();
 params.ApiKey = '{yourkey}';
 params.ListID = '{yourlistid}';
 params.Email = '[email protected]';
 params.Name = 'Name';
<cfinvoke webservice="http://{company}.createsend.com/api/api.asmx?wsdl"
      parameters = "#params#">

This is adding a new subscriber to a given list. Hopefully this might help someone integrating with CF!