Hunter Web Services, Inc.
UnclaimedHunter is an all-in-one email outreach platform that provides verified B2B contact data and outreach tools to help professionals find leads, verify emails, and engage prospects.
Overview
Hunter is an all-in-one email outreach platform that helps marketers, salespeople, recruiters, and others connect with more people using emails. It offers a unified toolkit to find leads, verify emails, and run outreach campaigns—without juggling multiple tools. The platform includes Hunter Discover (a B2B lead database), Domain Search, Email Finder, Email Verifier, and Sequences, plus integrations with AI, CRM, and APIs. Hunter emphasizes publicly sourced, transparent data and a privacy-conscious approach, delivering trusted, high-quality data to millions of users and powering end-to-end outreach workflows from discovery to engagement.
Mission statement
We simplify email outreach to help organizations grow.
Read recently by Perplexity, Meta, Amazon
What we offer
Hunter Discover
Efficiently find and segment high-quality B2B leads for effective outreach.
Pricing not published
hunter.io/b2b-databaseDomain Search
Quickly find the right contacts within companies to enhance your outreach efforts.
Pricing not published
hunter.io/domain-searchEmail Finder
Quickly connect with professionals by finding their verified email addresses.
Pricing not published
hunter.io/email-finderEmail Verifier
Ensure valid email communications to improve deliverability and reduce bounce rates.
Pricing not published
hunter.io/email-verifierHunter Sequences
Automate cold email outreach and grow your business effortlessly.
Pricing not published
hunter.io/cold-email-softwareAI Writing Assistant
Boost your outreach with AI-generated, personalized cold emails.
Pricing not published
hunter.io/ai-cold-email-assistantHunter Signals
Identify and engage prospects precisely when they need your solution.
Pricing not published
hunter.io/intent-dataHunter Data Platform
Access Industry-Leading B2B Email Data at Scale.
Pricing not published
hunter.io/data-platformHunter Integrations
Integrate Hunter with your favorite applications to streamline email outreach.
Pricing not published
hunter.io/integrationsHunter API
Enhance your outreach workflow with reliable email data integration.
Pricing not published
hunter.io/apiMarket segments
Market size by segment
Growth potential (CAGR)
Lead generation and prospecting
Capabilities to deliver ICP-aligned prospect lists and high-volume verified contacts for outbound sales, with quick turnaround and per-lead pricing for campaign-ready lists.
Products: Hunter Discover, Domain Search, Email Finder
B2B contact data and enrichment
Foundational company and contact records, real-time enrichment, and APIs that keep CRM and marketing systems accurate and complete.
Products: Hunter API, Hunter Data Platform, Domain Search, Email Finder, Hunter Integrations
Email verification and deliverability
Services that validate email addresses in real time, identify risky or catch-all addresses, and improve campaign deliverability and ROI.
Products: Email Verifier, Email Finder, Hunter Sequences
Sales engagement and outbound automation
Workflow and automation for multi-channel prospecting, CRM integration, sequencing, personalization at scale, and lead prioritization to accelerate outreach and conversion.
Products: AI Writing Assistant, Hunter Sequences, Hunter Integrations
Intent data and buying signals
Capabilities that capture and surface real-time intent and hiring signals (open roles, funding, job changes, product usage) to prioritize accounts and trigger timely outreach.
Products: Hunter Signals, Hunter Discover
More information about our offering
Hunter Discover
Hunter Discover is a comprehensive B2B lead database that allows users to find qualified leads based on their ideal customer attributes. Its advanced market segmentation features enable efficient lead generation, ensuring users can target the right companies for their outreach efforts.
Pricing not published
- Identify Target CompaniesUtilize multiple filters such as industry, size, and location to pinpoint the best prospects tailored to your ideal customer profile.
- Leverage Real-Time DataUse proprietary intent data to identify companies actively seeking services relevant to your offerings, enhancing the effectiveness of your outreach.
- Ensure DeliverabilityUse Hunter's reliable email verification tool to confirm the validity of email addresses, helping maintain high deliverability rates in your outreach campaigns.
- Refine Your TargetingImplement firmographic and technographic filters for finely tuned lead searches, enabling more targeted marketing strategies.
- Expand Your ReachFill your sales pipeline with prospects from different geographical regions, ensuring opportunities regardless of your operational areas.
- Streamline Your WorkflowsSync Hunter Discover with your CRM and other apps to ensure seamless data flow, enhancing overall efficiency and productivity.
- Consistent Lead FlowTrack and save your search parameters to consistently receive updates on new relevant leads matching your defined ICP.
Domain Search
Finds email addresses of a company. It surfaces publicly available email addresses with confidence scores, department filters, and detailed sources in just half a second.
Pricing not published
- Discover Email Addresses InstantlyUtilize Domain Search to uncover verified email contacts for any company instantly, aiding efficient outreach.
- Search Multiple Domains At OnceEfficiently identify contacts for multiple companies in one upload, streamlining your prospecting process.
- Integrate With Your ApplicationsAutomate your data extraction and outreach processes by integrating Domain Search into your existing software solutions.
- Evaluate Email Validity QuicklyMake informed outreach decisions based on the reliability scores assigned to email addresses sourced through Domain Search.
Email Finder
Finds any professional's email address.
Pricing not published
- Ensure DeliverabilityBy verifying email addresses before outreach, reduce the risk of bounces and protect your sender reputation.
- Streamline OutreachEfficiently procure emails for multiple contacts at once, saving time and enhancing productivity.
- Automate Email RetrievalUtilize the Email Finder API to seamlessly incorporate professional email searches into your existing systems.
- Instant AccessGet email addresses associated with any site directly in your browser, making research and outreach effortless.
Email Verifier
Verify any email address with the most complete email checker. Enter an email address to check its validity, all for free with no signup needed.
Pricing not published
- Verify Any Email AddressBy validating email addresses before sending your communications, you significantly reduce the chances of email bounces, maintaining a good sender reputation and enhancing email deliverability.
- Upload Lists of EmailsUpload a list and get quick results for email validation, allowing for efficient management of larger contact databases.
- Automate Email ChecksUse the Email Verifier API to automatically validate emails within your own software or tools, enhancing your outreach and ensuring data integrity.
- Block Fake SignupsAvoid fake or disposable emails from polluting your outreach efforts by using point-in-time validation.
Hunter Sequences
Sends cold emails.
Pricing not published
- Automate Outreach SequencesBuild automated email sequences to streamline your outreach, ensuring timely follow-ups and improved response rates.
- Improve Email EngagementConduct A/B tests on your email content to determine what resonates best with your audience, enabling data-driven adjustments.
- Optimize Email Sender ReputationGet insights into your email accounts’ performance to maximize deliverability and avoid spam filters.
- Speed Up Email CreationLeverage pre-designed templates that can be easily customized to resonate with your target audience.
- Streamline Email CommunicationCentralize responses from multiple email accounts to enhance workflow efficiency.
AI Writing Assistant
Writes high-performing cold emails instantly with AI.
Pricing not published
- Generates Personalized EmailsCrafts emails that are tailored to each recipient, improving engagement and response rates.
- Enhances Email RelevanceCreates relevant, personal messages that stand out in crowded inboxes.
- Simplifies Email CraftingStreamlines the writing process by guiding users to input key details for impactful emails.
- Tracks Engagement MetricsProvides insights on which emails generate clicks and responses to refine outreach strategies.
- Ensures Persistent OutreachAutomatically sends follow-ups, keeping your outreach top of mind for leads.
Hunter Signals
Hunter Signals identifies potential prospects based on intent data derived from relevant news and events, ensuring timely outreach to companies with explicit needs.
Pricing not published
- Identify Companies Needing SolutionsUtilize daily updates and notifications regarding company activities to engage prospects precisely when they express a need for your services.
- Create Enhanced Prospect ProfilesEnable tailored outreach strategies aimed at companies based on their specific business circumstances and needs.
- Receive Timely NotificationsStay ahead by responding promptly to developments within target accounts.
- Stay Informed of Company ActivitiesHelps maintain a current understanding of market dynamics that can indicate when to reach out to potential clients.
Hunter Data Platform
Coordinated email data services designed for scalable B2B email finding and verification, offering flexibility and seamless integration into existing workflows.
Pricing not published
- Leverage Extensive Email DataUtilize a vast repository of verified emails and business information, ensuring accurate and efficient outreach.
- Find or Verify Emails EfficientlySave time and resources by processing multiple emails simultaneously, enhancing productivity for marketing and outreach teams.
- Seamlessly Integrate Into WorkflowsConnect Hunter's capabilities into your existing systems, enabling advanced customizations tailored for your specific business needs.
- Ensure Data Protection ComplianceConduct outreach while respecting user privacy and complying with international regulations.
Hunter Integrations
Integrations connect Hunter to AI, agent tools, and other apps.
Pricing not published
- Enhance Your AI CapabilitiesIntegrate verified contact data with AI applications to improve lead generation and outreach workflows, providing reliable information without guessing.
- Automate Your Lead ProcessesLeverage the API to add Hunter’s capabilities directly into your applications, enabling a streamlined lead generation and outreach experience.
- Instantly Access Email AddressesUtilize the browser extension to identify email addresses directly on websites, streamlining the lead generation process as you browse.
- Effortlessly Manage LeadsUse the add-on to directly search and validate email addresses within your spreadsheets, making it easier to track and manage leads.
- Scale Your Outreach EffortsEfficiently manage large volumes of leads by performing bulk searches and verifications, saving time and resources.
Hunter API
API to integrate Hunter into your workflow.
Pricing not published
- Connect Hunter With Any ToolEasily interface Hunter's capabilities with your existing applications and systems to streamline your outreach and lead generation efforts.
- Find Target CompaniesUse natural language or advanced filters to discover companies that fit your ideal customer profile.
- Retrieve Professional EmailsProvide a person's name and domain to obtain the verified email address, including a confidence score on its validity.
- Check Email DeliverabilityEnhance email deliverability by programmatically validating email addresses with confidence scoring.
- Get Domain EmailsQuickly retrieve detailed email addresses associated with any given domain with minimal API calls.
- Scale Your OutreachAdjust usage credits according to your needs and expand your data as your outreach grows.
Sources
Methodology and sourcing behind the figures and links shown above.
Lead generation and prospecting
Estimated market reflects that ICP-aligned prospect lists / high-volume verified contacts are a subset of broader B2B lead-generation software and services and the faster-growing AI-enabled SDR/prospecting category. Published AI SDR forecasts show a multi-billion-dollar base in 2025 and very high growth (≈29–30% CAGR) for AI-driven sales automation, while broader B2B lead-generation services projections are larger but lower-growth (≈9.5–11.3% CAGR). Balancing a mature data/contacts submarket with accelerating AI automation, I estimate a current (circa 2025) addressable market of ~USD 6.0B and a mid-range growth potential of ~12% CAGR.
- "the global AI SDR market size was approximately USD 4.39 billion in 2025 ... projected to reach around USD 47.10 billion by 2034, with ... 30.17%"
- "market size is projected to reach USD 15.01 billion by 2030 from USD 4.12 billion in 2025, at a CAGR of 29.5%"
- "The B2B lead generation services market is projected to reach $32.85 billion by 2035, representing 11.33% annual growth."
- "the market could reach USD 14.11 Billion by 2035, expanding at an estimated CAGR of 9.5%."
B2B contact data and enrichment
Primary source (Prospeo) breaks out the B2B data market and reports the data enrichment segment at $2.57B with a projected 12.5% CAGR; Prospeo also notes the broader sales-and-marketing data category runs roughly $5–8B, providing context that contact/enrichment is a multi-billion-dollar subsegment of that market.
Email verification and deliverability
Estimate combines published figures for email deliverability tools (ResearchAndMarkets: US$1.2B in 2024) and email verification (BillionVerify: US$650M in 2024) to approximate the combined 2024 market at ~US$1.85B. For growth potential, I use the ResearchAndMarkets deliverability-tools CAGR of 8.3% (2024–2030) as a conservative, market-level growth rate; verification-specific forecasts in the results indicate higher potential but from a smaller base.
Sales engagement and outbound automation
Primary estimates draw from multiple market reports in the search results. Fact.MR values the global sales engagement software market at US$9.6B (2024) with a 14% CAGR to 2034; Persistence Market Research reports a similar base (~US$9.2B in 2026) and a 16.4% CAGR to 2033. Narrower AI‑SDR forecasts (MarketsandMarkets) show a smaller 2024 base (US$2.88B) but higher CAGR (~29.5%), indicating faster growth in AI-driven SDR subsegments. An outlier (Market Research Future) reports a much larger 2024 base and higher CAGR; the selected estimate uses the convergent Fact.MR/Persistence figures as the primary basis.
- Base Value(2024): 9.6 Bn; Forecast Value (2034): 35.7 Bn; CAGR (2034): 14%.
- Sales Engagement Platform Market Size (2026E) US$ 9.2 Bn; Projected Value (2033F) US$ 26.6 Bn; CAGR (2026 - 2033) 16.4%.
- Market Size Value in 2024: USD 2.88 Billion; CAGR of 29.5% (2025-2030) for AI SDR market.
- 2024 Market Size $32.37 Billion; CAGR (2025 - 2035) 34.44%.
Intent data and buying signals
Estimated using a sector-specific forecast from Salesmotion (buyer intent data tools market: ~$1.2B in 2025 to $2.8B by 2033 → ~11.2% CAGR). MarketsandMarkets’ broader AI-in-sales projection ($8.3B by 2028, 23.8% CAGR) provides adjacent market context and indicates stronger AI-driven tailwinds for intent capabilities; Dreamdata and vendor case studies in the results show measurable revenue impact and adoption, supporting continued mid-to-high single-digit to low-double-digit CAGR for the dedicated intent-data segment.
- Hunter Web Services, Inc.
- Hunter Discover
- Domain Search
- Email Finder
- Email Verifier
- Hunter Sequences
- AI Writing Assistant
- Hunter Signals
- Hunter Data Platform
- Hunter Integrations
- Hunter API
- "the global AI SDR market size was approximately USD 4.39 billion in 2025 ... projected to reach around USD 47.10 billion by 2034, with ... 30.17%"
- "market size is projected to reach USD 15.01 billion by 2030 from USD 4.12 billion in 2025, at a CAGR of 29.5%"
- "The B2B lead generation services market is projected to reach $32.85 billion by 2035, representing 11.33% annual growth."
- "the market could reach USD 14.11 Billion by 2035, expanding at an estimated CAGR of 9.5%."
- "The data enrichment market alone ... is $2.57B and growing at 12.5% CAGR."
- The global market for Email Deliverability Tools was valued at US$1.2 Billion in 2024 and is projected to reach US$1.9 Billion by 2030, growing at a CAGR of 8.3%.
- Market Size Growth: 2024: $650 million; 2025: $720 million (10.8% growth); 2033 projection: $3.5 billion.
- Base Value(2024): 9.6 Bn; Forecast Value (2034): 35.7 Bn; CAGR (2034): 14%.
- Sales Engagement Platform Market Size (2026E) US$ 9.2 Bn; Projected Value (2033F) US$ 26.6 Bn; CAGR (2026 - 2033) 16.4%.
- Market Size Value in 2024: USD 2.88 Billion; CAGR of 29.5% (2025-2030) for AI SDR market.
- 2024 Market Size $32.37 Billion; CAGR (2025 - 2035) 34.44%.
- The market for B2B Buyer Intent Data Tools, valued at around $1.2 billion in 2025, is projected to reach $2.8 billion by 2033.
- projected to reach $8.3 billion by 2028, growing at a CAGR of 23.8% from 2023 to 2028.
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