Seamless.ai vs ZoomInfo: AI sourcing versus database

ZoomInfo can silence an account against the national Do Not Call list; Seamless.AI’s pages never mention the feature

ZoomInfo’s admin panel includes a suppression tied to the national Do Not Call registry, masking numbers across the entire instance once an administrator turns it on. Seamless.AI’s own pages document no equivalent tool, only a Credit Back Protection policy that explicitly excludes phone numbers from its refund guarantee. On state data-broker registration, Seamless.AI names 4 states, Texas, California, Oregon and Vermont, while ZoomInfo names only 1, despite admitting elsewhere that it sells personal data. Scope compared, criterion by criterion. Checked 14 September 2026.

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Seamless.AI vs ZoomInfo: scope compared, criterion by criterion — checked September 14, 2026
Seamless.AI	ZoomInfo
What the tool answers
What it measures or produces
Seamless.AI presents itself as a real-time search engine producing B2B records (verified emails, verified mobiles, company data), with "100+ real-time data points per profile". Recorded 14/09/2026.	ZoomInfo produces searchable B2B company and contact records that can be enriched on demand, plus buying-intent signals and account-level web activity data.
The job it equips
The publisher targets prospecting salespeople: "Find verified buyers in seconds", "build pipeline faster with confidence", and claims "Trusted by 1M+ sales leaders worldwide". Recorded 14/09/2026.	The outbound sales rep — SDR and Account Executive — is the targeted role, with prospecting automation, outreach personalization, and follow-up handled inside the tool.
What it cannot tell you
The publisher describes itself as a real-time search engine over public data, average accuracy "90% accurate", "point-in-time" verification with no guaranteed ongoing deliverability. Recorded 14/09/2026.	The license bars using the data to assess a person's eligibility for credit, insurance, employment, or a government license or benefit — no FCRA-governed use case.
The data and how fresh it is
Database size
Two unreconciled versions, undated, from the publisher: "1.3B+ contacts researched"/"121M+ companies researched" vs "1.3B+ verified contacts"/"1.8M+ verified business emails"/"414M+ mobile numbers".	ZoomInfo states “500M+ Total Professional Profiles”, “300M+ Verified business emails”, “135M+ Direct dial numbers” and “122M+ company records”. No publication date accompanies these figures on the page.
Freshness and verification
10-step verification process, average accuracy 90%. Credit Back Protection returns the credit if the email doesn't exist or is disabled, excluding temporary bounces, role addresses, phones; no bounce rate published.	The publisher states the database is “updated daily” from over 38 million online sources, and publishes per-field rates without defining the measurement method.
Intent data
Buyer Intent Data, produced in-house (B2B publisher cooperative, "70% exclusive"), "12,000+ categories", "4M domains", "16.4B interactions/month/5,000+ sites". Paid add-on, absent from Free, no price published.	Intent data is present, measured on content consumption, and capped by tier: 25 topics on Marketing Demand, 100 on ABM Lite, unlimited on ABM Enterprise.
Phone numbers
"414M+ verified mobile numbers" (undated), included from Free. Not billed separately: "1 Credit = Phone + Email", 1 credit/contact. No mobile coverage rate published; Credit Back Protection excludes phone numbers.	Direct dials and mobiles are distinguished and counted separately. A national Do Not Call registry suppression exists, admin-activated, masking numbers across the entire instance.
Credit model
"Universal Credit": 1/contact researched/enriched, 1/contact via Autopilot, 0.2/interaction or message (AI Assistant/Prompts); API 1/contact, 1/company, 1/10 results. Free 50, Basic 250/month, Pro 10,000/month. Extra-credit price unpublished as of 14/09/2026.	One “bulk data credit” is consumed on a record's first enrichment; the record then goes “Under Management” for twelve months and can be re-enriched without another credit.
GDPR compliance
Privacy policy (updated 14/12/2025): EU rep (IT Governance Europe)/UK rep (GRCI Law); legal bases contract/legitimate interest/consent, EU standard contractual clauses. No register, DPIA, DPA; trust.seamless.ai unreadable (JS).	Legal basis invoked: legitimate interest. The publisher states it notifies data subjects under Articles 13 or 14, and positions itself as an independent controller toward the customer.
Compliance with state privacy laws
"State Consumer Privacy Policy" (updated 14/12/2025): 16 states (California, Texas...); rights to access/correct/delete/opt-out of sale. Form preferences.seamless.ai (DataGrail), phone 855-953-3265; data brokers TX/CA/OR/VT.	ZoomInfo registers as a data broker in Texas only, not California or Vermont, and admits selling personal data. Fifteen state laws named, four more announced. Deletion runs through three online forms, whose content would not load.
What comes out of it
Export formats
CSV export in 3 types (Clean, Raw, Custom), re-downloadable via Downloads, no published retention. Free = "Export Download", Pro/Enterprise = "Unlimited". XLSX/PDF/Looker/Sheets absent as export (XLSX for import only).	List exports produce a .csv delivered by email notification; for Salesforce, an admin caps per-object exports at up to 100,000 records at once, dropping to 5,000 through the Native App.
API access
Contradiction: 11/05/2026 release, "available on every plan, including free accounts", no separate cost; elsewhere "doesn't publish standalone API pricing", access varies by tier. Quotas: 60 req/min, 25 keys, 25 OAuth, 3 webhooks.	API access requires the Enterprise API or Copilot package; the billing unit is one credit per newly enriched record, free for the next twelve months, with search endpoints costing nothing.
What it connects to
Native integrations
"Sync with 6,000+ tools" (integrations) vs "7,000+ app integrations via Zapier" (FAQ). CRMs named: Salesforce, HubSpot, Microsoft Dynamics, plus Outreach, Salesloft, Zapier etc. Access depends on tier, unnamed.	The vendor directory shows 185 integrations as of 2026-09-02; the three that matter for an outbound stack are Salesforce, HubSpot, and Outreach or Salesloft for sending.
Google tools it connects to
Only Google tool named: Google Sheets (integrations FAQ), not described as native, "Powered by Zapier" label. Search Console, Analytics, Ads and Looker Studio absent from the integrations page as of 14/09/2026.	Google Cloud is listed among the natively supported warehouses for data delivery, and a Gmail integration is published, categorized under “Email” and “Export from ZoomInfo”.
Bringing your existing data across
No competitor import or assisted migration published as of 14/09/2026. Only documented ingestion: CSV/XLSX upload in Data Enrichment with mandatory headers per type; no automatic field matching. 1 credit per enriched record.	Existing CRM records are queried and matched in batches through the Salesforce Bulk API, 10,000 per batch, before enrichment; one credit is charged per new record.
Getting started, and the fine print
Support
Channels: in-app chat, help@success.seamless.ai, phone +1 (740) 494-3900, 24-48h ticket. Free: base+email+webinar; Pro +chat/priority queue; Enterprise +dedicated manager, QBRs, phone.	Support is reached by web form or at +1 866-904-9666; the level depends on the package — “Standard support” on Professional versus a dedicated manager on Copilot Enterprise.
Where the data is hosted
Only storage statement: United States "or in any other country where Seamless.AI or its service providers do business", no country/region/host named (privacy policy, updated 14/12/2025). trust.seamless.ai unreadable (JS).	The vendor places its services with three major cloud providers, with hosting data centers in the U.S.; no provider is named and no European residency option is published.
What happens if you leave
Terms (updated 12/07/2024): annual auto-renewal +12 months, "all sales are final", except publisher termination (pro rata refund); immediate data destruction. Notice 60 days (terms) or 60 days+CSM meeting (help) — both published.	The decisive contractual point: materials obtained during the term stay usable after it ends, but remain subject to the agreement, so no resale or transfer to any third party.
Minimum seats billed
Free limited to "1 User"; Pro billed "Per User" with one free admin seat; Enterprise "Unlimited Users". No minimum billed seat count published for Pro or Enterprise as of 14/09/2026.	No seat minimum is published. The license defers to the Ordering Document, and the pricing page states a seat-based model with no stated floor.
Data residency and regulated cloud
Region: United States "or in any other country where Seamless.AI or its service providers do business", no cloud region/host. FedRAMP, StateRAMP, AWS GovCloud, HIPAA BAA absent; attestation: publisher's own SOC 2 Type II.	ZoomInfo says it hosts “in the U.S.” (AWS, Google, no region), yet its Privacy Policy admits transfer to “any other country.” Own certs: SOC 2 Type II, ISO 27001/27701/27017. FedRAMP, StateRAMP, TX-RAMP, GovCloud, BAA absent.
What it costs
The entry price and what it includes
Only published amount: Free at $0, 1 user, 50 universal credits, non-renewing/non-rolling. Pro/Enterprise no published price (sales form); elsewhere: Basic 250 credits/month, Pro 10,000 credits/month.	No price is published: no currency, no amount, no billing period. Six packages are named with their features, and a separate free tier called ZoomInfo Lite exists
What pushes the bill up
Hidden line items: 4 paid add-ons (AI Assistant, Data Enrichment, Autopilot, Buyer Intent Data) with no price; Pro billed "Per User"; Bulk Purchase doesn't auto-replenish; +12-month commitment, 60-day notice; 2% late fee.	Three stated drivers: number of licenses, monthly credit consumption for exports, and depth of intelligence required; paid add-ons such as intent, Chorus, and Copilot stack on top.
Sales tax and nexus
Only tax statement: US sales tax added to the price, borne by the customer, in US dollars, at each billing cycle. No collecting state, nexus threshold, or per-jurisdiction tax tool published as of 14/09/2026.	ZoomInfo puts the tax burden on the customer (License T&Cs): liable for sales/use tax, must indemnify ZoomInfo, exemption via certificate to ar@zoominfo.com. No tax page, state list, nexus statement, or local calc published.
Procurement and invoicing
Only payment method published: card, charged in advance on day 1 of the cycle. Invoice billing, purchase orders, net-30, ACH, wire transfer, W-9 absent. Free is self-service; Pro/Enterprise via sales form or demo.	ZoomInfo accepts card, ACH, wire, check, and Bill.com/Ariba/Coupa; POs by email, W-9 as PDF. Net-30 by default (T&Cs), late interest 1.5%/month. No non-card threshold published; pricing page shows no price or checkout.

Key takeaways

ZoomInfo can silence an entire account against the national Do Not Call list; Seamless.AI’s pages never mention the option

ZoomInfo documents an administrator-activated suppression tied to the national Do Not Call registry, masking numbers across the entire instance once switched on. Seamless.AI’s own phone-number page describes something else entirely: a Credit Back Protection policy that returns a credit if an email does not exist, while explicitly excluding phone numbers from that protection. No Do Not Call suppression feature is documented on Seamless.AI’s pages as tested — an absence, not a claim that the feature does not exist anywhere in the product.

Seamless.AI names four states as a data broker; ZoomInfo names one

Seamless.AI’s state consumer privacy policy names Texas, California, Oregon and Vermont as data-broker registrations, alongside sixteen states covered for access, correction, deletion and opt-out-of-sale rights, routed through a DataGrail-hosted form and a published phone line. ZoomInfo registers as a data broker in Texas alone, not in California or Vermont, while its own pages admit elsewhere that it sells personal data — the same admission, a narrower registry footprint.

The refund guarantee that phone numbers are written out of

Seamless.AI’s Credit Back Protection returns a spent credit when an email does not exist or is disabled, but the same policy explicitly excludes temporary bounces, role-based addresses, and phone numbers altogether. A wrong or disconnected mobile number, unlike a wrong email, is not covered by any refund mechanism Seamless.AI publishes.

Seamless.AI publishes two database sizes and reconciles neither

One set of figures on Seamless.AI’s own pages reads one billion three hundred million-plus contacts researched and one hundred twenty-one million-plus companies researched. Another set, undated like the first, reads one billion three hundred million-plus verified contacts, one point eight million-plus verified business emails, and four hundred fourteen million-plus mobile numbers. Both are Seamless.AI’s own published figures, and neither is dated or reconciled against the other.

Seamless.AI also disagrees with itself on who gets API access for free

A release note dated 11 May 2026 states the API is available on every plan, including free accounts, at no separate cost. Elsewhere, Seamless.AI states it does not publish standalone API pricing and that access varies by tier. Seamless.AI publishes both statements and reconciles neither, leaving a free-tier user with no way to confirm API access without testing it directly.

Both vendors reserve the right to process data somewhere unnamed

ZoomInfo’s privacy policy allows transfer of data to any other country, without naming one beyond the United States. Seamless.AI’s privacy policy uses a near-identical formula: the United States, or any other country where Seamless.AI or its service providers do business, again without naming a second country. Neither vendor’s cloud-residency claim survives contact with a buyer who needs to know exactly where their contact data sits.

Frequently asked questions

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How many credits does Seamless.AI include by plan?

Seamless.AI runs on a “Universal Credit”: 1 credit per contact researched or enriched, 1 per contact via Autopilot, and 0.2 per interaction or message with the AI assistant. The Free plan includes 50 credits, Basic 250 per month, and Pro 10,000 per month. The price of an extra credit is not published. At ZoomInfo, a single “bulk data credit” is spent the first time a record is enriched, then stays valid for 12 months at no added cost.

Does Seamless.AI publish the price of its paid plans?

Only Seamless.AI’s Free plan has a published price: $0, for 1 user and 50 universal credits, with no renewal and no rollover. The Basic (250 credits/month) and Pro (10,000 credits/month) plans exist, but their price is unpublished and routed through a sales form. ZoomInfo likewise publishes no price, no currency and no billing period for its six named packages.

Is Seamless.AI’s API included on every plan?

Seamless.AI contradicts itself: a note dated May 11, 2026 announces the API “available on every plan, including free accounts” at no separate cost, while elsewhere the vendor says it does not publish standalone API pricing and access varies by tier. Published quotas are 60 requests per minute, 25 API keys, 25 OAuth connections and 3 webhooks. At ZoomInfo, API access requires the Enterprise API or Copilot package, billed at 1 credit per newly enriched record, free for the first 12 months.