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I’ve seen websites say during checkout “your address wasn’t in our db but this one was” showing what was clearly a cleaned up form (changed “Circle” to Cir, uppercased, turned ZIP into ZIP+4) so there are ways.

You would have to tell the user “use the corrected/matched one only” though. Some sites offer the correction but don’t make you use it.

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The downside is this service is not up-to-the-minute accurate. I rented a new-construction house and it was the better part of a year before it made it into the USPS address correction database, despite receiving mail just fine.

Might be acceptable collateral damage, but it’d exclude some people.

I think offering suggested edit is ok but requiring the edit be accepted is unwise.

Unfortunately I've had websites strip out the house number in the "cleaned up" address.

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