Comparison
RevAddress vs Lob
USPS validation at flat pricing — without the print/mail overhead.
Lob charges ~$20 for 1,000 lookups and ~$390 for 50,000. Their platform is built around direct mail — if you just need address validation, you're paying for features you don't use.
What you pay at scale
Lob charges per lookup. RevAddress charges a flat fee — and includes shipping features Lob doesn't offer.
| Monthly volume | Lob | RevAddress | You save |
|---|---|---|---|
| 1,000 lookups | ~$20 | $29/mo | +$9 (but includes shipping) |
| 5,000/mo | ~$100 | $29/mo | $71/mo |
| 10,000/mo | ~$200 | $79/mo | $121/mo |
| 50,000/mo | ~$1,000 | $199/mo | $801/mo |
Lob: validation + print/mail. RevAddress: validation + shipping workflow. Different tools for different jobs. Verified March 2026.
Feature-by-feature comparison
| Feature | RevAddress | Lob |
|---|---|---|
| US address validation | ✓ | ✓ |
| Batch validation | 50/call | ✓ |
| Flat monthly pricing | ✓ | ✗ |
| ZIP+4 correction | ✓ | ✓ |
| DPV confirmation | ✓ | ✓ |
| Residential/business flag | ✓ | ✓ |
| Rate shopping | ✓ | ✗ |
| Package tracking | ✓ | ✗ |
| Label creation | Q1 2026 | ✗ |
| BYOK (own USPS credentials) | ✓ | ✗ |
| Print & mail API | ✗ | ✓ |
| Postcard/letter generation | ✗ | ✓ |
| International validation | ✗ | ✓ |
| Free tier | 1K req/mo | 300 req/mo |
Why developers switch from Lob
Built for direct mail, not shipping
Lob's core product is print and mail. Address validation is a side feature. RevAddress is built from the ground up for shipping workflows — validation, rates, tracking, and labels.
Per-lookup pricing adds up
Lob charges roughly $0.02 per lookup. At 10,000/month that's $200 for validation alone. RevAddress Growth at $79/mo includes 25,000 requests — validation, tracking, and rates combined.
No USPS shipping integration
Need to ship packages after validating an address? Lob can't help. You'd need a second API (EasyPost, ShipEngine, etc.). RevAddress handles the full lifecycle in one integration.
Need validation for shipping, not direct mail? Try RevAddress.
Address validation, rate shopping, tracking, and labels — one API. Free tier included, no credit card required.