Tomba

Name: Tomba
Brand: Tomba
Price: 025758.901000 USD

Eight dollars ninety a thousand, ten SDKs, no tier ladder to argue with

Tomba is a developer-oriented email finding, verification, and enrichment API that crawls the public web for published contact data, exposes fourteen documented endpoints with ten official open-source SDKs, and sells credits at a flat 8.90 dollars per thousand on a calculator rather than through a tier ladder, charging one credit per valid email, five per phone lookup, and nothing at all when a search returns no valid result.

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Overview

Tomba is what Hunter would look like if it had been built in 2021 by people who cared more about the API than the interface. Founded that year and registered in Claymont, Delaware, it does the same fundamental job: crawl the open web, index the email addresses companies publish about themselves, infer each company's naming pattern, and answer the question of what a given person's work address is. The vendor claims to crawl more than two billion pages a month and to hold over 450 million verified contacts across 80 million indexed companies.

The difference is in how it is packaged. There are no named plans in the conventional sense. The pricing page is a calculator: choose a credit volume anywhere from five thousand to two million, and pay 8.90 dollars per thousand. A common configuration, marketed as Growth, is 89 dollars a month for 10,000 credits, split as 5,000 finder and search credits plus 5,000 verification credits included at no extra charge. Credits carry twelve-month validity, and the same block can be bought as a one-time purchase rather than a subscription, which is unusual and genuinely useful for a project with a finite list.

The billing rules are stated plainly and they are the right ones. A search that cannot produce a valid email is free. A duplicate search inside the same month costs nothing. An email found costs one credit. A phone lookup costs five. Verification is one credit but comes bundled in quantity. That puts Tomba firmly among the vendors who charge on success only, alongside Hunter, Anymail Finder, BetterContact, FullEnrich, and Dropcontact, and clearly apart from RocketReach, ContactOut, Datagma, Icypeas, and Enrich, all of which decline to publish what happens to your credit when a lookup fails.

What Tomba is really selling is API surface. Fourteen endpoints cover domain search, email finder, email verifier, author finder, LinkedIn finder, phone finder, company enrichment, email enrichment, domain similarity, company reveal, email count, email format, employee location distribution, and website technology detection, plus drop-in replacements for the person, company, and combined endpoints that Clearbit used to serve. Ten official SDKs, all open source, cover Python, Node.js, PHP, Ruby, Go, Java, Dart, Lua, R, and Elixir. The vendor advertises sub-200 millisecond average response times and a 99.9 percent uptime commitment. For a small team building enrichment into a product rather than clicking through a browser, that is a materially different proposition from anything else in this batch.

Best for

Developers and technical small teams building email finding, verification, or enrichment into their own product or internal tooling, and high-volume buyers who want a flat per-thousand price with twelve-month credit validity rather than a tier ladder.

Not the right fit for

Non-technical salespeople who want a polished browser workflow; Tomba has an extension and a web app, but the product's centre of gravity is the API and the interface is thinner than Skrapp's, SalesQL's, or GetProspect's.
Anyone whose primary need is phone numbers; at five credits each a mobile costs roughly 0.0445 dollars, which is fine occasionally and poor value against SalesQL's single-credit pool if calling is the main channel.
Teams wanting a searchable people database they can filter by title, seniority, and headcount to discover who to contact; Tomba answers questions about people and companies you can already name.
Buyers who need a bundled sequencer or CRM; Tomba finds and verifies and then hands the data to something else, with no outreach layer of its own.
Organisations with a procurement process requiring published API rate limits, SSO, data residency choices, or a documented GDPR legal basis; Tomba publishes an uptime figure and a compliance claim rather than the underlying detail.

How it works

1
Tomba crawls the public web at scale, indexing email addresses published on company sites, team pages, press material, blog bylines, and similar sources, then infers each company's email naming convention from what it observed.
2
You call Domain Search with a company domain to get the addresses Tomba holds for it, or Email Finder with a name plus a domain to get the single most likely address. Author Finder resolves the address behind a blog post or article, and LinkedIn Finder resolves one from a LinkedIn profile URL.
3
Every returned address passes through the verifier before it is charged. If Tomba cannot produce a valid result, the search is free, and repeating the same search within the same month is free as well, so the credits you spend map to distinct valid results.
4
Phone Finder resolves a phone number from an email address at a cost of five credits, which makes the phone the expensive data type in the model rather than a rationed separate meter.
5
Enrichment endpoints attach company and person attributes to a domain or an address, and a set of company intelligence endpoints cover technology detection, employee geographic distribution, similar-domain discovery, and departmental email counts.
6
Access is through the REST API with header authentication using a key and secret pair, through one of ten official open-source SDKs, or through the browser extension and web interface for people who would rather not write code.

Feature breakdown

29 features in 5 modules

Finding email addresses

Four different ways in, all charged only on a valid result.

Domain Search: Supply a company domain and receive the addresses Tomba has indexed for it, drawn from a crawl the vendor describes as covering more than two billion pages a month.
Email Finder: A name plus a domain returns the single most likely work address, combining directly observed data with the company's inferred naming pattern, at one credit per valid result.
Author Finder: Resolves the email address behind a blog post or article URL, which is a genuinely distinctive endpoint for anyone doing content-led or PR outreach and one almost no competitor exposes.
LinkedIn Finder: Takes a LinkedIn profile URL and returns an email address through the API rather than through a browser extension, which suits automation better than an extension-based tool.
Email Format: Returns the naming convention a company uses, so you can derive addresses yourself for people Tomba has not directly observed.
Email Count: Statistics on how many addresses Tomba holds for a domain, broken down by department and seniority, which is a cheap way to qualify a target account before spending credits on it.

Verification and phone lookup

Verification bundled generously, phone data priced as the premium it is.

Email Verifier: Deliverability checking as its own endpoint, with a typical configuration bundling 5,000 verification credits alongside 5,000 finder credits at no extra charge.
Verification at no marginal cost in the standard bundle: Because verification credits arrive alongside finder credits in the advertised configuration, list hygiene does not compete with lookups for budget the way it does on single-pool vendors.
Phone Finder: Resolves a phone number from an email address at five credits per lookup, roughly 0.0445 dollars, making phones about five times the cost of an email rather than a separately rationed allowance.
Phone Validator: Validates a phone number at one credit, so a number of unknown provenance can be checked cheaply before dialling.
Claimed accuracy: The vendor advertises 99 percent accuracy and a bounce rate under 5 percent. These are marketing figures without a contractual guarantee attached, unlike Anymail Finder's written delivery commitment.

Enrichment and company intelligence

The endpoints that make Tomba more than an email finder, including explicit Clearbit replacements.

Company Enrichment: Returns firmographic detail from a domain, covering the account research step before a list is built.
Email Enrichment: Returns full contact attributes from an address, which is the reverse lookup a signup form or CRM record usually needs.
Clearbit-compatible endpoints: Person, company, and combined endpoints published explicitly as Clearbit alternatives, which shortens migration for anyone stranded by Clearbit's absorption into HubSpot.
Technology Checker: Identifies the technologies a website runs, giving a technographic signal without a separate vendor such as BuiltWith or Wappalyzer.
Domain Similar and Company Reveal: Finds comparable companies to a given domain and returns fuller company intelligence, which supports lookalike account building.
Location endpoint: Returns the geographic distribution of a company's employees, useful for territory qualification before outreach.

Developer experience

The reason to choose Tomba over any of its interface-first rivals.

Ten official open-source SDKs: Python, Node.js, PHP, Ruby, Go, Java, Dart, Lua, R, and Elixir, all published on GitHub, which is broader language coverage than any other vendor in this category offers.
Fourteen documented endpoints: A properly enumerated API surface rather than a handful of lookups with an API bolted on.
Key and secret authentication: Header-based authentication using a paired X-Tomba-Key and X-Tomba-Secret, which is a slightly stronger scheme than a single bearer token.
Performance and uptime claims: Sub-200 millisecond average response times and a 99.9 percent uptime SLA are advertised, though per-second and per-minute rate limits are not published.
75 free API credits on signup: No card required, which lets a developer test the endpoints against real data before any commitment.
Browser extension and web app: A non-developer path exists for people who need to look something up by hand, though it is not where the product's attention has gone.

Pricing mechanics

A calculator instead of a ladder, with the honest billing rules stated on the page.

Flat per-thousand pricing: 8.90 dollars per thousand credits at any volume from 5,000 to 2,000,000, so a buyer at 10,000 pays the same unit price as one at a million and never has to reason about which tier they belong in.
No charge on a failed search: If Tomba cannot find a valid email, the search is free, which makes the per-credit price a true cost per valid result.
Free duplicate searches: Repeating the same search inside the same month costs nothing, so re-running a workflow does not double-charge you.
Twelve-month credit validity: Credits remain usable for a year rather than expiring monthly, which is materially better than the monthly reset used by CUFinder and most of this category.
One-time purchase option: The same credit block can be bought once rather than as a subscription, which suits a finite project and is rare among vendors here.
Three months free on annual billing: The annual option is a straightforward twenty-five percent equivalent discount rather than a repriced tier.

Use cases

4 documented

Developer adding enrichment to a SaaS signup flow

A work email arrives at signup and the product needs the company, headcount, and technology stack attached before routing the account.

Email Enrichment, Company Enrichment, and Technology Checker cover it in three calls through an official SDK, credits are spent only on valid results, and the twelve-month validity means a slow month does not waste the budget.

Team migrating off Clearbit

Clearbit's absorption into HubSpot has left an integration that has to move, and rewriting it against a differently shaped API is not a welcome project.

Tomba publishes person, company, and combined endpoints explicitly as Clearbit alternatives, which turns a rewrite into a remapping and gives a published per-thousand price where Clearbit's replacement does not.

Agency running a one-off list build

A single client project needs 20,000 verified addresses over six weeks and then nothing, and a monthly subscription would be dead weight afterwards.

Credits are bought once at 8.90 dollars a thousand with twelve-month validity rather than as a recurring plan, so the project pays for itself and stops without a cancellation to remember.

Content marketer doing outreach to writers

The target list is a set of article URLs rather than a set of company domains, and normal email finders have no way in.

Author Finder resolves the address behind each byline directly, an endpoint essentially no competitor exposes, and unresolvable articles cost nothing.

Pricing

from $0 (25 free searches per month, plus 75 free API credits on signup), then $8.90 per 1,000 credits

Usage-priced credits at a flat rate per thousand, bought as a monthly subscription or as a one-time block, with twelve-month credit validity and no conventional tier ladder.

Plan	Price	Includes
Free	$0 per month	25 searches per month 75 API credits on signup No credit card required Full endpoint access Enough for a developer to test all fourteen endpoints against real data before committing.
Growth	$89 per month for 10,000 credits	5,000 finder and search credits 5,000 verification credits included Browser extension and full API access Twelve-month credit validity Phone finder at 5 credits per lookup The configuration Tomba markets by name, though the calculator will sell you any volume at the same unit rate.
Custom volume	$8.90 per 1,000 credits monthly or as a one-time purchase	Any volume from 5,000 to 2,000,000 credits Identical unit price at every volume Available as a one-time block rather than a subscription Twelve-month validity Three months free on annual billing The flat rate removes the usual game of guessing which tier you belong in, which is the most buyer-friendly pricing structure in this batch.

Plan

Price

Includes

Free

per month

25 searches per month
75 API credits on signup
No credit card required
Full endpoint access

Enough for a developer to test all fourteen endpoints against real data before committing.

Growth

$89

per month for 10,000 credits

5,000 finder and search credits
5,000 verification credits included
Browser extension and full API access
Twelve-month credit validity
Phone finder at 5 credits per lookup

The configuration Tomba markets by name, though the calculator will sell you any volume at the same unit rate.

Custom volume

$8.90 per 1,000 credits

monthly or as a one-time purchase

Any volume from 5,000 to 2,000,000 credits
Identical unit price at every volume
Available as a one-time block rather than a subscription
Twelve-month validity
Three months free on annual billing

The flat rate removes the usual game of guessing which tier you belong in, which is the most buyer-friendly pricing structure in this batch.

Billing notes

The unit price is flat at 8.90 dollars per thousand credits across the entire published range from 5,000 to 2,000,000, so there is no volume discount and no volume penalty. A buyer at 10,000 credits pays the same per unit as one at a million.
A search that cannot produce a valid email is free, and a duplicate search inside the same month costs nothing. That means the advertised per-credit price is a genuine cost per distinct valid result rather than a cost per attempt, placing Tomba with Hunter, Anymail Finder, Skrapp, GetProspect, SalesQL, BetterContact, FullEnrich, and Dropcontact, and against RocketReach, ContactOut, Datagma, Icypeas, and Enrich.
Phone numbers cost five credits per lookup, roughly 0.0445 dollars each, against one credit for an email. Phones are a multiplier on the same pool rather than a separately rationed meter as they are on Kaspr.
Verification credits are bundled generously: the advertised 10,000-credit configuration is 5,000 finder plus 5,000 verification, so list hygiene does not compete with lookups for the same budget.
Credits are valid for twelve months rather than expiring at the end of the month, which matches Hunter and beats CUFinder's monthly expiry outright.
Credits can be bought as a one-time block rather than a subscription, which suits finite projects and is rare in this category.
Annual billing gives three months free, an effective twenty-five percent discount, and no annual commitment is required to reach the advertised unit price.
Seat counts are not published on the pricing page, so a team buying Tomba should confirm how many users a credit pool can be shared across before committing.

Value assessment: Tomba is the cheapest published per-unit price in this batch and one of the cheapest anywhere self-serve. At 1,000 verified emails a month you spend 8.90 dollars in finder credits, roughly 0.0089 per address, against Skrapp at 0.0145, GetProspect at 0.034, and Hunter's Starter at about 0.025 euros. At 10,000 emails a month you spend 89 dollars, well under Hunter's Growth tier at 149 euros for the same volume and better than any tier-laddered competitor here. Phone numbers are the weak point: at five credits, 1,000 mobiles costs 44.50 dollars and 10,000 costs 445, which is respectable in absolute terms but four to five times SalesQL's single-credit pool. The honest summary is that Tomba is the best price per email in this batch and a middling price per phone, and it is worth the switch mainly if you are calling the API rather than clicking a button, because the interface does not justify the move on its own.

Strengths & limitations

Strengths

A flat 8.90 dollars per thousand credits at every volume, which removes tier guessing entirely and is the cheapest published per-email rate in this batch.
Explicit and correct billing rules: no charge for a failed search, no charge for a duplicate search inside the same month, and one credit per valid email.
Twelve-month credit validity plus a one-time purchase option, so a finite project does not need a subscription it will forget to cancel.
Ten official open-source SDKs across Python, Node.js, PHP, Ruby, Go, Java, Dart, Lua, R, and Elixir, which is broader language coverage than any competitor here.
Fourteen documented endpoints including Author Finder and Technology Checker, which no other vendor in this batch exposes.
Published Clearbit-compatible person, company, and combined endpoints, which materially shortens a migration off a discontinued dependency.
Verification credits bundled in quantity alongside finder credits, so list hygiene does not compete with lookups for budget.

Limitations

The interface is a secondary concern; non-technical sales users will find Skrapp, SalesQL, or GetProspect better places to work.
Phone lookups at five credits are poor value against SalesQL's single-credit pool if calling is your main channel.
No searchable people database to filter by title and seniority, so Tomba answers questions about people you can already name rather than helping you decide who to contact.
No per-second or per-minute API rate limits are published, only an uptime figure and a response-time claim, which is a real gap for a product sold primarily on its API.
The 99 percent accuracy and sub-5-percent bounce claims are marketing figures with no contractual guarantee behind them.
Seat and team-sharing terms are not published, so a multi-user team is buying without knowing how the pool is shared.
Company transparency is thin: founded 2021, registered in Delaware, no published founders, headcount, or funding history, which is a weak position for a vendor asking to sit inside your product.
Coverage depends on what companies publish on the open web, so it is strong for technology, agencies, and media and noticeably weaker for manufacturing, trades, and privately held mid-market firms.

Head-to-head comparisons

5 alternatives

Tomba vs Skrapp.io

from $0 (Free, 50 credits), then $29 per month on annual billing (Professional)

Skrapp is the better browser product and Tomba is the better API. Skrapp gives you a searchable database, a strong LinkedIn extension, and two seats for 29 dollars, but its price ladder has a nine-fold cliff between 2,000 and 50,000 credits. Tomba charges a flat 8.90 dollars per thousand at any volume with twelve-month validity and ten SDKs. If a person is doing the clicking, take Skrapp; if code is doing it, take Tomba.

Full Tomba vs Skrapp.io comparison

Tomba vs Voila Norbert

from $0 (50 free finds on signup), then $39 per month on annual billing (Valet, $49 month-to-month)

Both are veteran-feeling web-crawl email finders that charge only for successful finds and roll credits over. Norbert is far more expensive per unit, 49 dollars for 1,000 leads against Tomba's 8.90, but includes unlimited team members, a bundled sequencer product, and separately priced verification at 0.003 dollars an email that undercuts Tomba's bundled model at very large list sizes. Take Norbert if you want unlimited seats and cheap standalone verification; take Tomba if per-email cost and API depth are what you are buying.

Full Tomba vs Voila Norbert comparison

Tomba vs Exa

from $0 ($20 in free credits on signup plus $10 monthly), then $7 per 1,000 searches

Both are API-first and both publish flat usage pricing rather than tiers, but they answer different questions. Exa searches the live web semantically and enriches what it finds, at 7 dollars per thousand searches with contact enrichment at 0.02 for an email and 0.07 for a phone. Tomba queries a pre-built index of published addresses at 0.0089 per email. Exa is better when you do not yet know which companies you want; Tomba is much cheaper once you do.

Full Tomba vs Exa comparison

Tomba vs Hunter

from 0 euros (Free, 50 credits per month), then 49 euros per month (Starter)

The same product concept a decade apart. Hunter has the index depth, per-result public source citations, published per-second rate limits, unlimited seats, and a bundled sender, at 149 euros for 10,000 credits. Tomba does 10,000 for 89 dollars, ships ten SDKs against Hunter's handful, exposes endpoints Hunter does not, and sells credits as a one-time block. Choose Hunter when provenance or documented rate limits matter; choose Tomba when unit price and API breadth do.

Full Tomba vs Hunter comparison

Tomba vs Icypeas

from $19 per month (Basic, 1,000 credits)

Both compete on being conspicuously cheap. Icypeas is 19 dollars for 1,000 and 89 for 10,000 with credits that never expire, but it will not state publicly whether a failed lookup consumes a credit. Tomba is 8.90 per thousand and says plainly that failures and duplicates are free, which makes its cheaper headline number also the more trustworthy one. On price and disclosure together, Tomba is the better deal; Icypeas keeps the edge only on credit permanence.

Full Tomba vs Icypeas comparison

Implementation & onboarding

Setup time: Fifteen minutes to a first API call: sign up, take the 75 free credits, pull an SDK, authenticate with the key and secret pair. The browser extension takes five. A production integration is a day or two depending on how many endpoints you use.
Learning curve: Low for a developer and moderate for anyone else. The endpoint set is well enumerated and the SDKs are conventional. The concept that needs learning is the credit multiplier: emails cost one and phones cost five, so a phone-heavy workload burns a budget four times faster than the headline rate suggests.
Onboarding: Entirely self-serve, including at very large credit volumes. There is no implementation call, and none is needed for an API of this shape.
Migration notes: Migration in is easiest for anyone leaving Clearbit, since Tomba publishes person, company, and combined endpoints as direct alternatives. Migration out is unencumbered because Tomba holds no workflow state worth keeping: it is a lookup service, so switching means changing an endpoint rather than moving a database. The twelve-month credit validity does mean an unused balance survives a pause rather than a departure.

Platform, API & security

Platforms: REST APIBrowser extensionWeb applicationTen official SDKs
API: Fourteen documented endpoints covering domain search, email finder, email verifier, author finder, LinkedIn finder, phone finder, phone validator, company enrichment, email enrichment, domain similar, company reveal, email count, email format, location, and technology detection, plus Clearbit-compatible person, company, and combined endpoints. Authentication is a paired X-Tomba-Key and X-Tomba-Secret header. Ten official open-source SDKs cover Python, Node.js, PHP, Ruby, Go, Java, Dart, Lua, R, and Elixir. Sub-200 millisecond average response and a 99.9 percent uptime SLA are advertised; per-second and per-minute rate limits are not published.
Compliance: GDPR stated by the vendor
Data residency: No customer-selectable regional hosting is advertised. The company is registered in Claymont, Delaware.
SSO: Not advertised.
Security notes: Tomba describes its data as generated by crawling more than two billion public web pages a month, which is a clearer sourcing statement than most vendors offer, though it does not expose per-result source URLs the way Hunter does. It states GDPR compliance but does not publish a documented legitimate interest assessment or a public objection form of the kind Kaspr provides. Buyers contacting people in the EU should request that detail in writing.

Support & resources

Channels: Email supportIn-app chatHelp centre
Documentation: API documentation covering all fourteen endpoints with authentication details and language examples, plus ten open-source SDK repositories on GitHub.
Community: Open-source SDK repositories on GitHub are the main community surface; there is no formal user forum.

Company

Founded: 2021
Headquarters: Claymont, Delaware, United States
Ownership: Privately held and independent
Employees: Not disclosed
Funding: No outside funding is publicly reported.

Timeline

2021Founded and registered in Claymont, Delaware, building an email finder around a public-web crawl and an API-first design.
2022Publishes official open-source SDKs across a wide range of languages, going broader on language coverage than any competitor in the category.
2023Expands the endpoint set to include author finder, technology detection, employee location distribution, and domain similarity.
2024Adds phone finder and phone validator endpoints, priced at five credits and one credit respectively rather than as a separate rationed allowance.
2025Publishes Clearbit-compatible person, company, and combined endpoints as a migration path for teams displaced by Clearbit's absorption into HubSpot.
2026Reports over 450 million verified contacts and 80 million indexed companies from a crawl of more than two billion pages a month, serving a claimed 150,000 professionals.

Integrations

REST API with header key and secret authentication
Official SDKs for Python, Node.js, PHP, Ruby, Go, Java, Dart, Lua, R, and Elixir
Clearbit-compatible person, company, and combined endpoints
Browser extension
CSV export

Frequently asked questions

10 questions

What is Tomba and what does it do?

Tomba is an email finding, verification, and enrichment API. It crawls the public web for published contact data, indexes it, and exposes fourteen documented endpoints covering domain search, email finding, verification, phone lookup, author lookup from an article URL, company and person enrichment, technology detection, and more. There is a browser extension and a web app, but the product is built primarily for developers calling it from code.

How much does Tomba cost?

A free tier gives 25 searches a month plus 75 API credits on signup with no card required. Beyond that, credits cost a flat 8.90 dollars per thousand at any volume from 5,000 to 2,000,000, with no tier ladder. The commonly advertised Growth configuration is 89 dollars a month for 10,000 credits, split as 5,000 finder credits plus 5,000 verification credits. Annual billing gives three months free.

Does a failed search consume a credit?

No. Tomba states that if it cannot find a valid email, the search is free, and that duplicate searches inside the same month also cost nothing. That means the per-credit price is a genuine cost per distinct valid result. Tomba therefore sits with Hunter, Anymail Finder, Skrapp, GetProspect, SalesQL, BetterContact, FullEnrich, and Dropcontact, all of which charge on success only, and against RocketReach, ContactOut, Datagma, Icypeas, and Enrich, none of which will publish their rule.

Are phone numbers a separate credit type?

Not a separate meter, but a multiplier. A phone lookup costs five credits against one for an email, drawn from the same pool, and a phone validation costs one. At 8.90 dollars per thousand credits that puts a mobile number at roughly 0.0445 dollars. That is reasonable, but it is four to five times what SalesQL charges from its single-credit pool, so a phone-heavy team should compare carefully.

What does Tomba cost per verified email and per mobile number at 1,000 and 10,000 lookups?

Emails cost one credit each, so 1,000 verified addresses is 8.90 dollars and 10,000 is 89. That is the cheapest published rate in this batch, roughly a third of Skrapp's and a quarter of GetProspect's. Mobile numbers cost five credits each, so 1,000 mobiles is 44.50 dollars and 10,000 is 445. Because failed and duplicate searches are free, all four figures are real costs per distinct valid result rather than costs per attempt.

Where does Tomba's data come from?

Tomba states that it crawls more than two billion public web pages a month, indexing email addresses that companies publish about themselves on team pages, press material, and bylines, then infers each company's naming pattern to answer for people it has not directly observed. That is a clearer sourcing statement than most vendors give, though unlike Hunter it does not expose the specific source URL for each result, so you can describe your provenance in general terms but not evidence it per address.

Is Tomba GDPR compliant for contacting people in Europe?

Tomba states GDPR compliance, but it does not publish a documented legitimate interest assessment, a named legal basis, or a public objection form of the kind Kaspr provides. Because it indexes published addresses rather than aggregating a purchased contact database, its structural exposure is narrower than an aggregator's. Even so, the compliance claim is thinner than the category's best, and your own legitimate interest assessment and objection handling remain your responsibility regardless.

What are Tomba's API rate limits?

Not published, which is the main gap in a product sold on its API. Tomba advertises a sub-200 millisecond average response time and a 99.9 percent uptime SLA, but no per-second or per-minute request ceilings. Hunter publishes exact figures for every endpoint, and SalesQL at least publishes daily call ceilings. With Tomba, burst and concurrency behaviour has to be established by testing before you build against it.

Do Tomba credits roll over or expire?

Credits carry twelve-month validity rather than expiring at the end of the month, matching Hunter and comfortably beating CUFinder's monthly expiry. Credits can also be bought as a one-time block rather than as a subscription, which is unusual and well suited to a finite project. Neither the flat unit price nor the twelve-month validity requires an annual commitment.

Does Tomba support waterfall enrichment or bring-your-own provider keys?

No. Tomba is a single-source provider that does not cascade a failed lookup to another vendor and does not accept your own keys for other providers the way Clay, BetterContact, and FullEnrich do. Because Tomba is cheap and charges nothing for misses, it is a good candidate to sit as one step inside a waterfall someone else orchestrates, which is how many teams actually use it.

Editorial verdict

Tomba is the best-value email lookup in this batch and the only one in it genuinely built for developers. Eight dollars ninety per thousand credits at every volume, with failed and duplicate searches free and credits valid for twelve months, gives an honest cost of under a cent per verified address, and ten open-source SDKs across fourteen endpoints is more API surface than anyone else here offers. The Author Finder endpoint and the Clearbit-compatible person and company endpoints are real differentiators rather than list padding. What is missing is everything around the API. There are no published rate limits, no seat terms, no searchable people database, no sequencer, a thin interface, and almost nothing disclosed about who runs the company. Phone lookups at five credits are middling value. Buy Tomba if code is calling it and price per verified email is the number that matters. Do not buy it as the tool a salesperson opens in the morning, and do not buy it as your phone data provider.

Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.