Melissa Handles Addresses.1Lookup Validates Everything.
Melissa's data-quality suite is broad, but it's enterprise-oriented and licensing-heavy. 1Lookup delivers focused validation from one credit balance. As the leading Melissa alternative, we offer simple validation without enterprise complexity, lengthy sales cycles, or hidden fees.
Two ways to improve data quality
Melissa is a broad data-quality suite with deep address verification. 1Lookup focuses on fast phone, email, and IP validation with fraud scoring.
The 1Lookup approach
- One API for phone, email, and IP validation, each with a fraud score
- Line type, carrier, DNC, deliverability, and proxy/VPN flags in plain JSON
- Data updated daily, drawn from a single universal credit balance
- Real-time responses, identical lookups cached for 7 days
- Live in about 5 minutes, with 1,000 requests/min included
The Melissa approach
- Established data-quality suite: address, email, phone, and identity
- Strong global address verification and enrichment
- A broad enterprise product line
- Postal address verification is a core strength 1Lookup does not cover
- Typically licensed for enterprise use
If you need postal address verification and enrichment, Melissa's suite covers that ground. For fast phone, email, and IP validation with a fraud score on one key, 1Lookup is focused there.
Good tool, no fluff
Been using 1Lookup for a couple months now. We verify leads before pushing them into Pipedrive. Honestly it just works. Not fancy, not buggy, and the support actually answers when you write them. Can't really ask for more.
Brian LetzterUnited States · October 2025The most practical data tool I've used
I've seen hundreds of validation APIs come and go. 1Lookup stands out because they don't oversell. Their data is solid, support is honest, and they're transparent about limitations, which is rare in this industry. I've replaced three tools with this one. They listen, they iterate, and they keep improving. You can feel there are actual engineers behind it, not just salespeople.
Bùi Thị Thanh NgọcVietnam · October 2025Solid phone validation API
We use 1Lookup inside our telemarketing app to verify numbers before they go to the dialer. Setup was simple and the results have been consistent. It's not overloaded with features, just fast, accurate, and reliable. Docs could be a bit deeper, but honestly, it works out of the box.
Dirk van MeerUnited States · December 2025Saved us from hundreds of spam signups
We run a SaaS product with free trials and were getting flooded with bots and fake users. After integrating 1Lookup, the difference was night and day. It quietly filters out junk signups without blocking legitimate customers. The support team even helped us fine-tune our risk thresholds on a quick Zoom call. Being honest, we couldn't ask for more.
Ido ShachamUnited States · January 2026A good addition to our workflow
1Lookup has been a good addition to our workflow over the last few months. We use it to verify IPs, emails, and phone numbers, which has noticeably cut down the time we spend chasing dead-end applications. It's reasonably priced and their support team is actually helpful. It's a very practical tool for what we need.
Meredith Jr. RedmondIsrael · March 2026
Melissa vs 1Lookup FAQ
Common questions about Melissa and switching to 1Lookup
What is Melissa?
Melissa is a data quality and identity verification company best known for its address verification tools. Its Data Quality Suite validates, standardizes, and corrects postal addresses for hundreds of countries and territories, and it also offers phone, email, and name verification plus geocoding and data enrichment. Melissa is generally sold as an enterprise contact-data-quality platform used to clean customer records and mailing lists.
How much does Melissa cost?
Melissa pricing is volume-based and tiered, and full-suite or high-volume use is typically quote-driven. As of publication, Melissa's Global Address Verification lists annual plans starting around $5,145 per year for US coverage (about one million records) and more for global coverage. Melissa's core address-verification products are paid, though it offers a free trial (and a limited monthly allowance of free lookups on some services) so you can test before committing.
What is the best Melissa alternative?
The best alternative depends on what you actually need to verify. If your priority is validating phone numbers, emails, and IP addresses rather than cleansing postal addresses, 1Lookup is a strong Melissa alternative because it handles all three through a single API and one universal credit system. Its data is refreshed daily from FCC and carrier sources, and a 7-day free trial lets you test it before you pay.
How is 1Lookup different from Melissa?
Melissa's strength is enterprise address and contact-data quality across many countries, usually licensed as a broad suite. 1Lookup is focused on real-time validation of phone numbers, emails, and IPs from one API, each returning a fraud score, with data refreshed daily. In short, Melissa leans toward address-centric data cleansing, while 1Lookup unifies phone, email, and IP verification (plus carrier/HLR, reverse, and IP fraud lookups) under a single credit balance.
Can I try 1Lookup for free?
Yes. 1Lookup offers a 7-day free trial so you can validate phone numbers, emails, and IPs before committing to a paid plan. You can sign up and start testing the API right away, using one universal credit system across all lookup types.
The Smart Melissa Alternative
Skip the enterprise licensing. Move to 1Lookup for phone, email, and IP checks on one plan, with a simple API.
1Lookup vs Melissa: the same criteria, side by side
Both products measured on identical criteria, with Melissa’s numbers taken from its own published pricing.
1lookup1lookup.ioMulti-channel validation- Phone
- IP
melissa.comMulti-channel validation- Phone
- IP
- Melissa · Starts at
- $40 for 10,000 credits ($0.004/credit); a US Personator check (address, name, phone, email) is 3 credits (~$0.012/verification), a mailbox email check is 4 credits (~$0.016), a live phone check is 10 credits (~$0.04)
- 1Lookup: $99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise)
- Melissa · Free trial
- No separate self-serve trial; the 1,000 monthly free credits are the de facto trial. A feature grid lists 90-day free trials as included with subscription plans only, with no further terms published.
- 1Lookup: 7-day free trial on every plan: $5 of credits on Starter, $20 on Growth, Professional, and Enterprise (card required, nothing charged up front)
- Melissa · Do credits expire?
- Credit balance is reset to 0 if there is no activity (purchases or usage) within one year, per the credit expiration notice on both credit-cost pages
- 1Lookup: Unused monthly credits roll over for 3 months; separately purchased credits last 1 year
| Criteria |  1Lookup | |
|---|---|---|
| Contact-data coverage | EmailPhoneIP | EmailPhoneIP |
| Pricing model | Monthly plans with universal credits; core phone, email and IP lookups cost 1 credit, enrichment and intelligence products cost more | Prepaid credit packs spendable across Melissa's developer APIs, Lookups, Listware, Clean Suite for CRM, and Mailers Online ($40 for 10,000 credits, $350 for 100,000, $3,200 for 1,000,000) with per-service credit multipliers (US Personator address/name/phone/email check 3 credits, mailbox email check 4, live phone check 10, global address 10, IP locator 2), plus subscriptions (e.g. US Address Verification $5,145/yr for 1M records, Global Address Verification from $40 for 1,000 records/month) and unlimited US address licenses from $16,000, with up to 1,000 free credits topped off monthly. |
| Starting price | $99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise) | $40 for 10,000 credits ($0.004/credit); a US Personator check (address, name, phone, email) is 3 credits (~$0.012/verification), a mailbox email check is 4 credits (~$0.016), a live phone check is 10 credits (~$0.04) |
| Free option | Free single lookups via the online tools at 1lookup.io/tools, no account required | Up to 1,000 free credits topped off on the 1st of every month, ongoing, after a one-time $4.97 KYC/AML identity verification fee; separately, a Global Address Verification Free plan gives 250 address records/month at $0 |
| Free trial | 7-day free trial on every plan: $5 of credits on Starter, $20 on Growth, Professional, and Enterprise (card required, nothing charged up front) | No separate self-serve trial; the 1,000 monthly free credits are the de facto trial. A feature grid lists 90-day free trials as included with subscription plans only, with no further terms published. |
| Do credits expire? | Unused monthly credits roll over for 3 months; separately purchased credits last 1 year | Credit balance is reset to 0 if there is no activity (purchases or usage) within one year, per the credit expiration notice on both credit-cost pages |
What Melissa costs at volume
| Volume | Melissa price | Per 1,000 |
|---|---|---|
| 10,000 credits | $40 (Credits 40 pack) | $4.00 per 1k credits |
| 100,000 credits | $350 (Credits 350 pack, 12.5% off) | $3.50 per 1k credits |
| 1,000,000 credits | $3,200 (Credits 3200 pack, 20% off) | $3.20 per 1k credits |
| 1,000,000 US address records/year | $5,145/yr (US Address Verification subscription) | $5.15 per 1k records |
For scale: 1Lookup’s plans work out to $4.95 per 1,000 lookups on Starter down to $2.00 per 1,000 on Enterprise, with every lookup type (phone, email, IP, spam) drawing from the same credits. Pricing models differ (subscription vs pay-as-you-go), so compare at your real monthly volume.
Melissa’s pricing page, as we read it
Every Melissa figure above is taken from this page. It is reproduced here so you can check the numbers against the source instead of trusting our transcription of them, and the caption links straight to it. Prices change; the capture date says how fresh this is.
Before you sign: Melissa and 1Lookup on the operational terms
The terms that decide what a year actually costs, rather than what the first month does. A blank means we could not verify it on either product’s published pages, not that the answer is nothing.
| Term | 1Lookup | Melissa |
|---|---|---|
| Minimum commitment | None. Monthly plans with no contract and no minimum volume; cancel any time | Subscription plans are sold as a single-year term, as auto-renewal with a 60-day opt-out, or as a multi-year agreement with a price lock guarantee. Credit packs carry no stated term. |
| Going over your quota | — | Subscriptions: usage is viewable in the customer portal and a CSR offers upgrade options as the limit approaches; a "hard stop" option is also available. Credits: additional credits can be purchased from the site 24/7. No per-unit overage rate is published. |
| API access | Included on every plan and during the free trial; there is no tier that unlocks it | Melissa Cloud APIs run off a license key that is either a Credit license or a Subscription license, using the same endpoints either way; the credit model has fewer features and lower rate limits per https://docs.melissa.com/cloud-api/cloud-api/licensing.html. On https://www.melissa.com/pricing the "API" badge appears only on the US Address Verification Subscription, US Address Verification Unlimited and GAV 1M cards, and the included-features table lists "Street Search, ZIP Search API" as Subscription-only. |
| Rate limit | 1,000 requests per minute on standard accounts, with higher limits available on request | Documented approximate throughput by tier: Pay-as-you-go (Credit) user ~5 records/second and ~158 million/year; Self-Service Subscription ~12 records/second and ~380 million/year; Business Subscription ~50 records/second and ~1.5 billion/year; Enterprise Subscription ~100 records/second and ~3 billion/year. Exceeding the rate returns HTTP 429 Too Many Requests with an empty body. |
| Uptime SLA | — | Pricing page comparison table lists "Service Level Agreement up to 99.95" as Subscription-only; the FAQ on the same page states subscriptions come with "a standard 99.9% SLA guarantee". No SLA is offered on Pay As You Go or Unlimited. |
| Compliance | — | The pricing page's included-features table lists "CCPA, GDPR, HITRUST, HIPAA, SOC2 reports" as available on Subscription plans only. Melissa docs cover "FedRAMP-Authorized Cloud APIs" under Melissa GovCloud. Site footer links a Certifications & Compliance page and an EU-US Data Privacy Framework page. Plans are labeled CASS & DPV Certified. |
| Support | Starter: Email Support; Growth: Priority Email & Chat Support; Professional: Chat + Live Meeting; Enterprise: Dedicated CSM | "Unlimited Technical Support" and "Options for premium 24/7 support" are both listed as Subscription-only. A public Support Center and the phone line 1-800-MELISSA are available to all. |
Melissa fine print worth reading twice
Published terms that change what Melissa costs or what you can do with it. Each one links to the Melissa page it was read on, because a claim about somebody else’s contract should be checkable in one click.
A one-time $4.97 KYC/AML verification fee is charged to activate the free monthly top-off of up to 1,000 credits.
Read it on Melissa’s siteCredits are consumed per address rather than per lookup: the FAQ states a US address equals 3 credits and a global address equals 10 credits, so the $40 / 10,000-credit pack covers roughly 3,333 US addresses.
Read it on Melissa’s siteThe US Address Verification Pay As You Go card states "10 Credits Per Address", which conflicts with the FAQ on the same page stating a US address equals 3 credits.
Read it on Melissa’s siteService Level Agreement, unlimited technical support, a dedicated account rep, tiered volume discounts, price lock, and CCPA/GDPR/HITRUST/HIPAA/SOC2 reports are all marked as available only on Subscription plans, not Pay As You Go or Unlimited.
Read it on Melissa’s siteAuto-renewing subscriptions require a 60-day opt-out to stop renewal.
Read it on Melissa’s siteSecurity documentation and custom onboarding documents require a subscription plan.
Read it on Melissa’s siteAddress Autocompletion is only available with subscription options, not with the credit model.
Read it on Melissa’s siteGlobal Address Autocomplete is published at $350 for 10,000 records/year, and the US-addresses-only variant is listed as "Call for Pricing".
Read it on Melissa’s siteThroughput is gated by plan tier: pay-as-you-go credit users are limited to roughly 5 records/second while Enterprise subscriptions get roughly 100 records/second.
Read it on Melissa’s siteMonthly credit top-offs use the latest reconciled balance snapshot, so the credited amount may differ from the real-time account balance.
Read it on Melissa’s site
Melissa’s API reference
Their public developer documentation, so you can judge the integration before you start one.
1Lookup
Melissa
Where Melissa wins
- One credit pool spans US/Canada address, name, phone, and email in a single 3-credit Personator check, plus global address (250+ countries), live phone, mailbox email, IP geolocation, property, and business checks
- Perpetual free tier: up to 1,000 credits refilled on the 1st of every month, not a one-time trial (after a one-time $4.97 identity verification fee)
- Low entry cost with published volume discounts: $40 for 10,000 credits down to $3.20 per 1,000 credits at the 1M pack, and unlimited US address plans at $16,000
- 37+ years in contact data quality (per Melissa's site) with a USPS CASS and DPV certified address engine and a claimed 10,000+ customers
- Subscription plans add an SLA the plan grid lists as up to 99.95% (the FAQ cites a standard 99.9% SLA), unlimited tech support, price-lock guarantees, and postpaid billing options
Where 1Lookup wins
- Phone, email, and IP validation in one API with one universal credit balance
- Phone data refreshed daily from FCC and carrier sources
- Carrier/HLR lookup, line type, spam score, and reverse lookup included alongside validation
- Self-serve plans with no contracts and 3-month credit rollover
Melissa pricing and product facts verified against melissa.com as of July 2026. Prices change; always confirm on the vendor’s site. 1Lookup numbers come from the live rate card.
Who this is for
A quick, honest read on which tool fits your use case.
Choose 1Lookup if: you want self-serve phone, email, and IP validation in one API, rather than an enterprise contact-data-quality suite.
Consider Melissa instead if: you need enterprise address verification and broader contact-data quality, standardizing and correcting postal addresses across many countries.