Fortunately, the answer is no.  Whether you send your emails via the ExactTarget API or directly through the ExactTarget user interface, your results are the same: top-notch deliverability success.   Your API-initiated emails are sent through the same mailing servers that record your bounce and undeliverable information.  Additionally, any emails sent with our productized integrations to Salesforce.com or Microsoft CRM also have the same stellar deliverability reputation –which means they’ll land in the subscriber’s inbox.  Subscriber import deliverability tools—like sending deliverability—are also the same. If a single subscriber is added to a list with a subscriber add call or a create subscriber call, an error message is returned if the subscriber cannot be added to the list.  If several subscribers are added with a list import API call, the ExactTarget List Detective TM is also applied. ExactTarget will not allow subscribers with spam domains, dead domains, or addresses that have master unsubscribed to be added into a list.  For the batch list import, a results file will be emailed to the address indicated in the call. This is the same results file that would be produced from a list import through the user interface.  If you are considering using an ExactTarget integration offering--or you’re currently using a form of the ExactTarget integration offering--rest easy in the knowledge that your email deliverability will continue to be highly successful.

Jessica Koch
Integration Consultant