Seamless.AI
A real-time B2B contact search engine that builds and verifies prospecting lists for sales teams.
Independent overview by new Mantra · updated September 26, 2026
- Category
- Sales
- Pricing
- Free sign-up; paid plans quoted via sales inquiry (no public tiers or rates)
- Implementation
- Under 1 week
- Adoption risk
- Medium
- Integrates with
- Salesforce, HubSpot, Pipedrive, Outreach, Salesloft
If your reps lose hours hunting for direct dials and verified emails, you can test Seamless.AI today on its free plan — 50 credits for one user — and see how its real-time search does on the accounts you actually sell to.
Heads-up: this is an affiliate link — if you buy through it, new Mantra may earn a commission at no cost to you. It doesn’t change our take.
What Seamless.AI does
Seamless.AI crawls the public web in real time to find and verify contact information — business emails, phone numbers, and direct dials — for B2B prospects. Rather than pulling from a static database, it runs fresh searches each time so the data reflects current information. The platform claims a database of over 2.2 billion contacts and 121 million companies.
Beyond contact lookup, the platform includes outreach tools such as built-in emailing, an AI-powered dialer, and social selling features, all managed from a single interface. It also offers CRM enrichment to clean and update existing records, and buyer intent signals to help prioritize which prospects are most likely ready to engage. A Chrome extension lets users find contact details while browsing LinkedIn or other websites.
Seamless.AI connects with Salesforce, HubSpot, Pipedrive, Outreach, and Salesloft, and the vendor states compatibility with over 6,000 tools through its integrations layer. Implementation is typically under one week, making it a relatively fast deployment for sales teams that need to start building lists quickly.
Key capabilities
Real-Time Contact Verification
Each search crawls the web live to return verified emails and phone numbers, rather than relying on a pre-built static database. Invalid emails are covered by a credit-back policy with no forms required.
CRM Data Enrichment
The platform can fill gaps in existing contact records and keep CRM data current, reducing the manual effort of maintaining clean prospect lists.
Built-In Outreach Channels
Email sending, an AI-assisted dialer, and social selling tools are included in the platform, allowing teams to move from prospecting to outreach without switching applications.
Buyer Intent Signals
The tool surfaces indicators of which prospects may be actively researching relevant solutions, helping teams prioritize outreach efforts.
Chrome Extension Prospecting
A browser extension lets users pull contact details for B2B professionals while browsing any website, turning routine web research into active prospecting.
Workflow Automation
Autopilot and an AI assistant can run outbound sequences and enrichment tasks automatically, reducing repetitive manual steps for sales and revenue operations teams.
Best for
- B2B sales teams — SDRs and account executives — who spend significant time manually sourcing or verifying prospect contact information
- Small to mid-market companies that need to build targeted outbound lists quickly and don't have a large research function in place
- Revenue operations and sales ops teams looking to keep CRM records accurate without manual data-cleaning effort
- Founders or early-stage teams running outbound sales who need an all-in-one prospecting and outreach tool rather than multiple point solutions
- Organizations already using Salesforce, HubSpot, Pipedrive, Outreach, or Salesloft and wanting a data source that connects directly to those systems
Worth knowing
- There is a free plan with 50 credits for one user, but Pro is sold per user as annual credit packages through sales, so smaller teams face a quote conversation and a meaningful cost commitment before they can access higher credit volumes.
- The tool operates on a credit model — each contact lookup consumes credits — so high-volume prospecting teams should model expected monthly usage carefully against plan limits before committing.
- This is primarily an outbound sales prospecting tool; teams focused on inbound lead management, account-based marketing strategy, or deep market analytics may find the fit limited.
- Data accuracy depends on real-time web crawling, which works well for publicly available contact information but may be less reliable for contacts with a minimal or private online presence.
- Expect some change-management effort: integrating a new data source into existing CRM and outreach workflows requires process change and data governance consideration, particularly around GDPR and CCPA compliance for teams operating in regulated regions.
How Seamless.AI compares
Prospecting tools overlap heavily, so it helps to separate the data layer from the outreach layer. Seamless.AI is strongest as a fast, real-time contact search that feeds calls and emails; how accurate it is for you depends on your market, so test it rather than trusting any vendor's claim.
vs Apollo.io
Apollo pairs a large contact database with built-in multichannel sequences, inbound routing and basic deal tracking, sold per user per month. Seamless.AI leans towards real-time contact search, a Chrome extension and a dialer for reps working a list, on a credit model. Apollo is the broader platform; Seamless is built around search and dial speed.
vs ZoomInfo-class data suites
Enterprise data suites are sold as a broader intelligence platform, usually through an annual contract. Seamless.AI is a rep-level search tool with a free entry point. The difference is the job — quick lookups and list building for reps versus company-wide data infrastructure — not a claim that either is more accurate everywhere.
vs Amplemarket
Amplemarket bundles a database, buying signals and multichannel sequences, starting at about $600 a month for two users. Seamless.AI is cheaper to start with, including the free plan, and its focus is finding and verifying contacts rather than running the whole outbound programme.
vs lemlist
lemlist, like Reply.io, is a sequencing platform first: it runs cadences across email, LinkedIn and calls, and its lead data serves those campaigns. Seamless.AI is data plus dialing. Teams often use Seamless to find the contacts and a sequencer to work them.
Related tools
Ready to see Seamless.AI in action?
Run your next ten target accounts through the free credits and check the results against what you already know. That is the quickest way to see whether the data holds up in your market before any conversation about paid credit packages.
Heads-up: this is an affiliate link — if you buy through it, new Mantra may earn a commission at no cost to you. It doesn’t change our take.
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