Non-postal addresses are locations that do not receive mail through postal services like USPS. These addresses are often found in remote areas or are used for purposes other than mail delivery, such as utility or commercial services. Businesses may need to differentiate non-postal addresses from postal ones to ensure efficient communication and avoid wasted postage costs. PostGrid’s Address Verification API helps identify and filter out non-postal addresses, ensuring that only valid, mailable addresses are used for campaigns.
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