"Push" Feedback Retry Policy

PostalMethods will make several attempts to call back your server with the status of a letter. The following policy applies when your server does not confirm the reception of a status callback.

HTTP POST & SOAP XML

The following applies to feedback sent by HTTP POST and to feedback sent by SOAP XML.

Postback Result Returned Error Code Retry Schema
Success 0 (zero) None
Error (Non-zero or no response) Every 60 seconds for up to 60 minutes.

SMTP

Unless a terminal error message is returned from the receiving SMTP server, messages will retry every 5 minutes for up to 120 minutes.