Address Validator does not own or maintain any address data. Instead, validate addresses using datasets maintained by couriers and government agencies. These datasets are accurate and comprehensive, but some addresses that may slip through include:

Address Validator is designed to have little to no impact on your conversion rate.

By default, the warning message displayed looks like this:

You can customize the message on your Address Validator dashboard → Address Prompts tab → Customize unverifiable addresses prompts box → Prompt when an inaccurate address is detected → specify a new message. Utilizing a sterner message can make customers more likely to act on the prompts to fix address issues.

Email notifications are sent out whenever a customer proceeds through the checkout with an invalid address and ignores the warning prompts. You can enable these notifications on your Address Validator dashboard → Email Notifications tab → Who gets these emails? box

You can enable these email notifications for the store and/or the customer by checking the relevant boxes. Also, you can customize where these emails are sent in the Email address field. Multiple email addresses can be added, just separate them with commas.

If you want to prevent unverifiable addresses at all costs, you can block them on your Address Validator dashboard → Address Prompts tab → Customize unverifiable addresses prompts → Block unverifiable addresses

This customization prevents users from proceeding with an unverifiable address and only allows the customer to update the existing address.