Address Validation for Gravity Forms
Validate US shipping addresses against the USPS database inside your Gravity Forms address fields before submission.
What it does
Wrong addresses cost money. When a customer types a bad address into your form, you pay for the failed shipment and the support call that follows. This add-on checks every address against the official USPS database in real time, before the form is submitted.
As a customer types, they see verified address suggestions in a dropdown. The plugin fills in correct ZIP+4 codes, standardized formatting, and checks that apartment numbers are present when required. It works with your existing Gravity Forms address fields automatically—no form rebuilding or code needed.
It is built for e-commerce stores, subscription boxes, service businesses, and event organizers—anyone who ships or mails physical items and needs to know the address is real before acting on it.
Key features
- Real-time USPS database validation before the form submits
- Address autocomplete dropdown reduces typos and abandoned forms
- ZIP+4 codes filled in automatically for precise postal routing
- Apartment number detection prompts customers to add missing unit numbers
- Works with existing Gravity Forms address fields, no form changes needed
- Setup takes about two minutes with no coding required
- Powered by Smarty APIs; requires a Smarty account (42-day free trial available)
Good for
Written from Dmitry Alexander’s own listing. Version and dates come straight from the source and are checked weekly.
Does this work with my existing address fields?
Yes. It enhances your current Gravity Forms address fields automatically without any form changes.
Do I need a third-party account to use this?
Yes. The plugin uses Smarty APIs for USPS-grade accuracy, so you need a Smarty account. Smarty offers a 42-day free trial before a paid plan is required.
What if I only subscribe to one Smarty API?
With only the US Street Address API, the plugin still validates every address—customers just type manually instead of picking from autocomplete suggestions.
Does it support addresses outside the US?
No. It validates US addresses only.