Viralstyle Fulfillment will provide an in-app verification button, for orders that have invalid address issues. This tool is called Smarty Streets, used by UPS/USPS to verify all Domestic Addresses (USA). This tool can be found by clicking the "info" button, to the right of the order in question, when the order is in the "Action Required" tab.
There are many ways that you can prevent address issues from causing production delays. There are a number of Free & Paid Address Verification apps available in the Shopify App Store.
In some cases, if the customer types an invalid address, a pop-up will appear asking them to check for errors. This would be a great tool/feature to provide for your customers to check their own information.
Customers would much rather be notified to update a typo at checkout, rather than be notified/emailed 5-7 days later (only to find out their order hasn't been processed).
We can not provide any feedback on these apps, but we've been getting some great reviews on them. These apps were suggested by Viralstyle Fulfillment sellers. Viralstyle Fulfillment cannot be held accountable for these apps in any way, so please use them at your own risk. These apps may help you verify all addresses for Domestic shipments at checkout.