Spaw vs Smarty
Smarty sells US address verification against postal data: a lookup validates to the secondary level and returns delivery-point metadata that open registers cannot answer, including a DPV match code, the residential indicator and vacancy status.
The table uses Smarty's public pricing and documentation pages as checked on 2026-09-22, and Spaw's own pricing page. A row those pages carry no value for is marked "not on the pages read" rather than guessed at, and that is a statement about the reading and not about what Smarty publishes.
| spaw | smarty | |
|---|---|---|
| Pricing model | Pay-as-you-go credit packs whose credits never expire, or optional plans, billed monthly or yearly, that deposit the same credits every month for less and roll unused plan credits over up to three months' allowance; both through Stripe Checkout | Annual lookup bundles on the Professional plan from $552 a year, sized 12K, 60K, 120K, 300K, 600K, 1M or 2M lookups; a monthly option and bespoke Custom pricing are offered. Only the $552 entry price is shown on the page. A subscription "expires when the address lookups or the time runs out, whichever comes first"; there are no overage costs, and an exhausted plan answers 402 "payment required" unless auto-renewal buys a new block. |
| Free tier | 100 free credits every month, no card required | A free trial rather than a standing tier: "42 days" and "1,000 address lookups", "No credit card required" |
| Price per 1,000 at about 10k | $7.80 (Growth pack: 5,000 credits for $39), or $5.80 on the Growth monthly plan (5,000 credits for $29 a month) | not on the pages read |
| Price per 1,000 at about 100k | $4.49 (Volume pack: 100,000 credits for $449), or $3.49 on the Volume monthly plan (100,000 credits for $349 a month) | not on the pages read |
| Addresses no register covered billed | An address that stands as written costs 1 credit whether or not a register carried the building; where no register covers the country, exists answers null rather than a verdict | not on the pages read |
| Addresses that cannot stand billed | No: an address that cannot stand as written is free whatever the reason, and so are repeats within 7 days and rows repeating an address already in the same job | not on the pages read |
| Registers held | Open address registers for 23 countries and territories, each named in the answer with the coverage its own publisher claims. Complete, building by building: Australia, Austria, Belgium, Czechia, Denmark, Latvia, Luxembourg, Netherlands, Norway and Switzerland. Partial, building by building: Brazil, France (with French Guiana, Guadeloupe, Martinique, Mayotte, Réunion, St. Barthélemy, St. Martin and St. Pierre & Miquelon), Germany and United States. Partial, streets only: Great Britain. House-number ranges as well: United States. Absence from a partial register is never read as evidence that an address does not exist. | Postal rather than cadastral: the page claims "210M addresses (incl 20M non-USPS)" and "over 20 million non-postal addresses", with "Up to 55 points of metadata" per lookup. It names no national address register. |
| Country coverage | Postal formats for 207 countries and territories: the line layout for 199 of them, and the required fields and postcode pattern wherever the table records them; 52 postal operators' rules for naming a delivery point that is not a street; open address registers for 23 countries and territories; postcode directories for Great Britain from the ONS Postcode Directory, with Northern Ireland excluded because reusing BT postcodes needs a separate licence, and for 108 more countries and territories from GeoNames' postal codes. | The United States on the page checked; international address verification is priced on a separate page. |
| Claims post is delivered | No, and every answer says so: is_deliverable, is_cmra, is_vacant and is_residential answer null because that check is licensed and not enabled here. exists is a match in an open address register, never a statement that post arrives. | Yes. The metadata named on the page includes a DPV match code, the residential/commercial indicator (RDI), vacancy status, carrier route and ZIP type, and validation runs "down to the secondary level, including apartment and suite numbers". |
| Bulk limit | 100,000 addresses per bulk job, with an HMAC-signed completion webhook | not on the pages read |
| Batch API | 100 addresses per synchronous request | "API and batch processing (including no-code options)"; "Each address submitted for validation, whether in bulk or individually, is counted as an address lookup". No batch size is stated on the page. |
| Rate limit | 50 requests per second per key on the address endpoints | Professional: "Starting at 25,000 address lookups / second"; Custom: "Custom address lookups / second". |
| Official SDKs | Python, Node.js, PHP | not on the pages read |
| Data retention | No history row and no log line carrying the address. What a lookup leaves is the 7-day marker that makes a repeat free and the count behind seen_by_you, both kept under a digest, never the address. The address itself is kept only on the account's own suppression list and in its monitors. Bulk input lists and result files are deleted with the job after 30 days. | not on the pages read |
checked 2026-09-22 · sources: Smarty US address verification pricing
When Smarty fits better
US mailers who need the postal service's own delivery-point answers — is it a real delivery point, is it occupied, is it residential — which open data cannot give.
- Answers the delivery-point questions licensed postal data can answer: DPV, RDI and vacancy
- Validates to the secondary level, so an apartment or suite number is checked rather than ignored
- ZIP9 and rooftop precise geocodes are listed on the plan
- A 42-day, 1,000-lookup trial with no card
When Spaw fits better
Developers who want a written address parsed against its own country's rules and checked against open registers, where a field nobody could evaluate answers null instead of a guess.
- Smarty answers whether post is delivered to an address; Spaw does not and says so: is_deliverable, is_cmra, is_vacant and is_residential answer null because that check is licensed and not enabled
- Spaw's exists is a match in a country's own address register; where that register covers only part of the country, as the US National Address Database does, an address it does not hold answers null rather than false
- Smarty's page prices the United States; Spaw reads an address against its own country's postal format and follows the building into that country's open address register where one is installed, naming the register in the answer and whether its publisher calls coverage complete or partial
- Smarty sells annual lookup bundles; Spaw sells pack credits that never expire, and an address that cannot stand as written costs nothing
Questions
Does Spaw charge for addresses no register covers?
An address that stands as written costs 1 credit, whether or not a register carried the building. An address that cannot stand costs nothing, whatever the reason, and a repeat within seven days is free. Where no register covers the country, or where the register that answered covers only part of it, exists answers null — not evaluated — rather than a verdict, and the not_in_register weight cannot fire. Smarty does not publish how it bills them.
Can I move an address list from Smarty to Spaw?
Yes. Upload the CSV in the dashboard or POST it to the bulk endpoint, up to 100,000 addresses a job; Spaw keeps your columns and adds 64 result columns after them (the address as submitted, the answer, the datasets behind it, what the row cost and whether your suppression list answered it), and a country column gives each row its own country. Rows repeating an address already in the list are answered once, cost nothing, and are counted as duplicates.
Is there a free tier?
Every Spaw account receives 100 free credits at the start of each month with no card on file, and unused free credits accumulate. Smarty offers: A free trial rather than a standing tier: "42 days" and "1,000 address lookups", "No credit card required".
Try Spaw on your own list
Free credits every month, no card. Upload a list, keep your columns, and download only the rows you want. See the pricing page for every rule, or the Smarty alternatives.
Smarty is a trademark of its owner. Spaw is not affiliated with it. Markdown version: /compare/smarty.md