Melissa alternatives
Melissa sells address verification for the United States and "250+ Countries & Territories" against postal data, CASS and DPV certified, with a credit model for pay-as-you-go use and annual subscriptions sized by records, alongside name, phone, email and identity verification. The services below are the other options in the same category, each with the figures its own public pages state as of 2026-09-16. 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 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 | 100 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) |
| Geoapify | Daily credit quotas on monthly subscriptions: Free (3,000 credits a day), API 10 (10,000 a day, $59 billed monthly), API 25 (25,000, $109), API 50 (50,000, $179), API 100 (100,000, $299), API 250 (250,000, $609) and Custom ("Unmetered credits / day", from $860). "1 Geocoding API request costs 1 credit"; in a batch each address counts 0.5 credits, plus 1 credit to create the job and 1 for each result request. A yearly term is offered, but its prices are not in the page text read. | A standing free plan: "3,000 credits / day", "No credit card required", up to 5 requests a second, usable for "commercial websites and apps" with the required Geoapify and data-source attribution | not on the pages read |
| Google Address Validation API | "Pay-as-you-go", "charging per request according to the pricing table", under two SKUs named on the billing page, Address Validation Pro and Address Validation Enterprise; the per-request rates render inside the pricing table and are not stated in the page text as fetched, so no figure is quoted here. | not on the pages read | not on the pages read |
| Ideal Postcodes | Pay-as-you-go credit packs, "No Subscriptions. No Monthly Fees.": 200 credits for £9 ("£0.045 per lookup"), 1,100 for £42 (£0.038), 4,300 for £155 (£0.036), 12,800 for £420 (£0.033) and 32,100 for £900 (£0.028). "Credits are valid for 12 months"; the lookup guide adds that the timer "only starts when you begin using that batch of credits". Larger volumes and UK registered charities are priced on request. | A trial rather than a standing tier: "1-Month Trial", "50 free credits, full support and no credit card needed"; the trial searches worldwide except Ireland, "which requires separate licensing" | £33 per 1,000 lookups on the 12,800-credit pack (£420, "£0.033 per lookup"), the smallest pack that covers 10,000. |
| Lob | Verifications are priced per call on top of a print-and-mail plan: on the Developer plan ($0 a month) "US Address Verifications $0.05/additional" and international $0.07; on Startup ($260 a month) $0.025 with "1,000 included for $25/mo" and international $0.06 with 500 included for $30 a month; on Growth ($550 a month) $0.009 with "50,000 included for $450/mo" and international $0.055 with 10,000 included for $550 a month; Enterprise is "Contact us for details". | The Developer plan is "Starting at $0 / month" with verifications billed per call; the site offers "Get started for free". | $50 per 1,000 US verifications on the Developer plan ($0.05 each) or $25 per 1,000 on Startup ($0.025 each beyond the 1,000 included for $25 a month); international $70 or $60. |
| Loqate | Pay-as-you-go credit purchases of £50, £100, £250, £500 and £1,000 (or 75€, 150€ and 300€), each buying a published per-lookup rate for every service, plus bespoke plans; "Credit is valid for 12 months after the purchase date" and there are no setup costs. The pricing page shows two rate tables headed "New Pricing" and "Old Pricing" without saying which accounts each applies to; the figures here are from "New Pricing". Its usage-example selector also lists a £2,500 plan that neither table prices. | A trial rather than a standing tier: "Start your 45-day free trial"; the FAQ adds "You get free credits to test the service" | £82 to £86 per 1,000 Address Verify lookups on the "New Pricing" table: 8.2p a lookup on the £100, £250 and £500 tiers and 8.6p on the £50 and £1,000 tiers. Address Capture is 8.6p to 4.9p in the UK and 7.1p to 4.1p for the rest of the world. |
| Postcode.eu | Annual tiers that include validations: Tier 1 €50, Tier 2 €100, Tier 3 €250, Tier 4 €500 and Tier 5 €1,000 a year, each with a per-validation rate by country group. "Up to the Tier amount you can perform a mix of validations", subscriptions "are automatically upgraded when the maximum of the Tier is reached", and past the highest Tier usage "will be invoiced in blocks of 10% and the rates of this Tier apply". A validation is "a bundle of related requests that were used to validate an address". An SLA (€1,000 + 2% a year) and a DORA addendum (€2,500 a year) are extra. | A trial rather than a standing tier: "After registering an account it is possible to try the APIs for free", and "Testing the API is without obligations" | €17.64 per 1,000 validations on Tier 3 (€250 a year, "€0.01764 each") for Austria, Belgium, Denmark, Finland, France, Luxembourg, Norway, Spain, Sweden, Switzerland and the Netherlands. Germany, Italy and the United Kingdom cost more a validation, so 10,000 of them fall in Tier 4 (€500 a year): €34.17 per 1,000 for Germany (€0.03417 each) and €43.30 for Italy and the United Kingdom (€0.0433 each). "Tier prices are including validations" and "Prices and quantities are per year", so the tier amount is paid in full: 10,000 validations cost €250 a year for the eleven countries (€25 per 1,000) and €500 for Germany, Italy or the United Kingdom (€50 per 1,000). |
| 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 ("£--") in the pack list; the credit calculator's recommendation box shows "Credit pack £25 500 Credits" and "Monthly plan £25 1,000 Credits". Larger packs and plans with volume discounts are quoted. | 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. |
| PostGrid | Quoted: the pricing page asks for annual mail-piece and address-verification volumes in bands from "Less than 50,000" to "More than 1,000,000" and publishes no rate. | "Try for Free. Sign Up for Address Verification API" on the product page; no standing free volume is stated. | not on the pages read |
| Smarty | 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. | A free trial rather than a standing tier: "42 days" and "1,000 address lookups", "No credit card required" | not on the pages read |
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.
Geoapify
Geoapify is a location platform (maps, routing, places and geocoding) whose Geocoding API is also sold for address validation: an address is matched against open datasets such as OpenStreetMap and OpenAddresses and returned with coordinates and confidence scores for the city, the street and the building.
Teams already using Geoapify for maps or routing that want an open-data address check with coordinates on a free daily allowance.
Google Address Validation API
Google's Address Validation API, part of Google Maps Platform, validates, standardises and geocodes an address, reports a confirmation level per component with inferred and replaced parts, and can run US and Puerto Rico addresses through USPS CASS on request.
Checkout and delivery forms that want Google's component-level correction and geocoding in the countries its coverage table lists, inside a Google Maps Platform account.
Ideal Postcodes
Ideal Postcodes is a UK-first address lookup, autocomplete and cleansing API answered from Royal Mail's Postcode Address File, with Ordnance Survey AddressBase Core and Premium offered as additional datasets, sold as pay-as-you-go credit packs, with international address data for more than 240 countries and territories; its site also lists phone and email validation among its products.
UK checkouts and CRMs that want a postcode-to-address picker and address cleansing from Royal Mail's address file, with UPRNs and coordinates included, paid for by the lookup rather than by subscription.
Lob
Lob is a print-and-mail platform whose Address Verification API validates, standardises and enriches US and international addresses, CASS certified, with USPS delivery-point data and a deliverability likelihood drawn from Lob's own mail delivery records.
Teams that already print and mail through Lob and want the same account to clean the addresses first, with the postal service's delivery-point answers for the United States.
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.
Postcode.eu
Postcode.eu, from Postcode.nl B.V., sells address autocomplete and validation APIs for fourteen European countries, each answered from the official sources its pages name (government address registers for most, the postal operator's file for others), priced per validation inside an annual tier.
European checkouts and CRMs that want autocomplete and validation answered from each country's official address source under one annual subscription.
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.
PostGrid
PostGrid sells an address verification API for the United States and Canada, CASS and SERP certified against USPS and Canada Post data, with an international service for "245+ Countries and Territories", autocomplete, parsing, batch verification and a Salesforce integration, priced by quotation.
Businesses mailing in the United States and Canada that want postal-certified verification and autocomplete under one contract, priced on their annual volume.
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.
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.
Start with the free grant
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Melissa and the other product names are trademarks of their owners. Spaw is not affiliated with them. Markdown version: /alternatives/melissa.md