Smarty alternatives
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 services below are the other options in the same category, each with the figures its own public pages state as of 2026-09-10. Spaw is listed first because this is Spaw's site; the side-by-side comparison has the full table.
| service | pricing model | free tier | price per 1,000 at ~10k |
|---|---|---|---|
| Spaw | Pay-as-you-go credit packs, or optional monthly plans that deposit the same credits every month for less; both through Stripe Checkout, credits from either never expire | 10 free credits every month, no card required | $7.80 (Growth pack: 5,000 credits for $39), or $5.80 on the Growth monthly plan (5,000 credits for $29 a month) |
| Loqate | Pay-as-you-go credit purchases of £50, £100, £250, £500 and £1,000, each buying a lower per-lookup rate, plus bespoke plans; there are "no setup costs" | A trial rather than a standing tier: "Start your 45-day free trial" | £48 to £83 per 1,000 Address Verify lookups depending on tier (8.3p a lookup on the £50 tier down to 4.8p on the £1,000 tier). Address Capture is 6.9p to 4p in the UK and 6.8p to 3.9p for the rest of the world. |
| Postcoder | Credit packs (500 to 200,000 credits, "valid for 12 months from purchase") or monthly plans (1,000 to 100,000 credits, with unused credits not carried over). "Your credits can be used for any Postcoder request." The pack prices themselves render as placeholders ("£--") on the page. | A free trial is offered; its duration and allowance are not stated on the pricing page | £100 per 1,000 UK address lookups pay-as-you-go (10.00p a request, 2.0 credits) or £45 per 1,000 on a monthly plan (4.50p). This is the address comparison, so only the address rate is quoted: the same account buys email and mobile validation at their own per-request rates, which are read off the same page. |
Spaw
Verification API that bills per answered lookup across six signals on one key and one balance: Email verification, Phone intelligence, IP intelligence, Address verification, Business verification against open registers, and Cross-signal consistency, which runs any subset of the first four in one call and names where they agree and where they do not. The address side reads a written address against its own country's format, names the kind of delivery point behind it, checks the postcode against the national directory and follows the building into that country's own address register where one is installed.
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.
Loqate
Loqate sells address capture and address verification alongside email, phone and bank validation, priced per lookup from a pay-as-you-go credit balance, with international data for over 245 countries and territories.
Teams that want address capture in a checkout across many countries, with email, phone and bank validation billed from the same balance.
Postcoder
Postcoder is a UK-first address lookup API sold as credits that any of its services can spend: address lookup, bank validation, email validation, mobile validation and OTP verification, each costing a published number of credits per request.
UK checkouts that want a postcode-to-address picker from a licensed UK dataset, with email and mobile validation on the same balance.
Start with the free grant
Every Spaw account gets free credits every month with no card. Verify a sample from your list and compare the verdicts before you commit to anything.
Smarty and the other product names are trademarks of their owners. Spaw is not affiliated with them. Markdown version: /alternatives/smarty.md