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Where bad data costs you money.
Short reads on failed deliveries, email bounces and stale phone numbers, and what to do about them. Every number links to where it came from.
Shipping
Holiday shipping 2026: the dates, fees and checks to sort before Black Friday
USPS peak prices are already on, UPS and FedEx surcharges start next week, and the last USPS ground date for Christmas is December 17. Here are the 2026 holiday shipping dates and fees in one place, and the checks to run before Black Friday.
6 min read
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Email deliverability
How to cut your email bounce rate below 2% before your next campaign
Most sending platforms start asking questions somewhere between 2% and 5% bounces. Here's what Gmail, Yahoo, Outlook and the big email platforms actually say, and six steps to get under 2% before your holiday sends.
7 min read
Address data
USPS CASS certification: what it means and why it matters for your data
Every address validation vendor mentions CASS. Few explain it. Here's what USPS actually tests, who needs it, how it differs from NCOA, and how to check a vendor's CASS claim in five minutes.
5 min read
Address data
Which states move the most? 2024 Census data for all 50 states
About 1 in 8 Americans moved in 2024, and in some states it was closer to 1 in 7. Here's the mover rate for every state, from Alaska and Colorado to New Jersey, and what it does to the addresses in your customer list.
6 min read
Address data
The real cost of a failed delivery in 2026, and how to work out yours
FedEx now charges $25.50 to fix a bad address, and UPS charges $25.25. That's before you reship anything. Here's what the carriers charge in 2026, and a simple way to put a number on what bad addresses cost your business.
6 min read
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