The USPS Street Address Standardization Library the user and developer in order to standardize the address of the street according to the guidelines of the USPS from the publication 28 of USPS.  It is a very useful tool for the bulk email compliance and has the ability to match the street address from the different systems that are present.  It has the ability to standardize the street numbers as well as the pre-directional, post directional along with the directions that are between the names of the street.  The rural routes as well as the street abbreviations along with the unit abbreviations are present. There is no monthly subscription in this case and also there is no maximum limit to the addresses as well as the numbers that it can be standardized by the user and the developer.  It has the ability to perform the standardization process completely offline and it is considered to be a Perpetual holder of license. It has the ability to be purchased separately and the product has been included in the gold suite.  The users are the members along with the subscribers of the gold suite are capable of receiving new product as well as new upgrade for free as a part of the annual subscription.