Every address is checked against USPS data and marked Verified, Needs correction, or Undeliverable.
A box that ships to a bad address is money and momentum gone, so Boxli validates every address before it can burn a send. Whenever an address enters the system — created by hand, imported from CSV, edited on a contact, or picked from Find Addresses candidates — it is checked against USPS data automatically.
Each address ends up in one of three states. Verified means it matched and is ready to ship. Needs correction means USPS found a close match with a fix — a standardized street line, a corrected ZIP — and a one-click Apply correction accepts it. Undeliverable means USPS has no deliverable match; sends to that contact are blocked until the address is fixed, rather than letting a box vanish.
For lists that predate validation, the Contacts page has a bulk Validate addresses button that checks every contact who has never been validated, so you can clean an old list in one pass instead of opening contacts one at a time.
Every guide here lives in the in-app Help Center too — open Help in the sidebar.
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