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Hunter Web Services, Inc.

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hunter.ioUpdated

Hunter 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-database

Domain Search

Quickly find the right contacts within companies to enhance your outreach efforts.

Pricing not published

hunter.io/domain-search

Email Finder

Quickly connect with professionals by finding their verified email addresses.

Pricing not published

hunter.io/email-finder

Email Verifier

Ensure valid email communications to improve deliverability and reduce bounce rates.

Pricing not published

hunter.io/email-verifier

Hunter Sequences

Automate cold email outreach and grow your business effortlessly.

Pricing not published

hunter.io/cold-email-software

AI Writing Assistant

Boost your outreach with AI-generated, personalized cold emails.

Pricing not published

hunter.io/ai-cold-email-assistant

Hunter Signals

Identify and engage prospects precisely when they need your solution.

Pricing not published

hunter.io/intent-data

Hunter Data Platform

Access Industry-Leading B2B Email Data at Scale.

Pricing not published

hunter.io/data-platform

Hunter Integrations

Integrate Hunter with your favorite applications to streamline email outreach.

Pricing not published

hunter.io/integrations

Hunter API

Enhance your outreach workflow with reliable email data integration.

Pricing not published

hunter.io/api

Market segments

Market size by segment

Growth potential (CAGR)

Lead generation and prospecting

6 Billion USD12% CAGR

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

2.57 Billion USD12.5% CAGR

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

1.85 Billion USD8.3% CAGR

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

9.6 Billion USD14% CAGR

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

1.2 Billion USD11.2% CAGR

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 Companies
    Utilize multiple filters such as industry, size, and location to pinpoint the best prospects tailored to your ideal customer profile.
  • Leverage Real-Time Data
    Use proprietary intent data to identify companies actively seeking services relevant to your offerings, enhancing the effectiveness of your outreach.
  • Ensure Deliverability
    Use Hunter's reliable email verification tool to confirm the validity of email addresses, helping maintain high deliverability rates in your outreach campaigns.
  • Refine Your Targeting
    Implement firmographic and technographic filters for finely tuned lead searches, enabling more targeted marketing strategies.
  • Expand Your Reach
    Fill your sales pipeline with prospects from different geographical regions, ensuring opportunities regardless of your operational areas.
  • Streamline Your Workflows
    Sync Hunter Discover with your CRM and other apps to ensure seamless data flow, enhancing overall efficiency and productivity.
  • Consistent Lead Flow
    Track 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 Instantly
    Utilize Domain Search to uncover verified email contacts for any company instantly, aiding efficient outreach.
  • Search Multiple Domains At Once
    Efficiently identify contacts for multiple companies in one upload, streamlining your prospecting process.
  • Integrate With Your Applications
    Automate your data extraction and outreach processes by integrating Domain Search into your existing software solutions.
  • Evaluate Email Validity Quickly
    Make 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 Deliverability
    By verifying email addresses before outreach, reduce the risk of bounces and protect your sender reputation.
  • Streamline Outreach
    Efficiently procure emails for multiple contacts at once, saving time and enhancing productivity.
  • Automate Email Retrieval
    Utilize the Email Finder API to seamlessly incorporate professional email searches into your existing systems.
  • Instant Access
    Get 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 Address
    By 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 Emails
    Upload a list and get quick results for email validation, allowing for efficient management of larger contact databases.
  • Automate Email Checks
    Use the Email Verifier API to automatically validate emails within your own software or tools, enhancing your outreach and ensuring data integrity.
  • Block Fake Signups
    Avoid 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 Sequences
    Build automated email sequences to streamline your outreach, ensuring timely follow-ups and improved response rates.
  • Improve Email Engagement
    Conduct A/B tests on your email content to determine what resonates best with your audience, enabling data-driven adjustments.
  • Optimize Email Sender Reputation
    Get insights into your email accounts’ performance to maximize deliverability and avoid spam filters.
  • Speed Up Email Creation
    Leverage pre-designed templates that can be easily customized to resonate with your target audience.
  • Streamline Email Communication
    Centralize 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 Emails
    Crafts emails that are tailored to each recipient, improving engagement and response rates.
  • Enhances Email Relevance
    Creates relevant, personal messages that stand out in crowded inboxes.
  • Simplifies Email Crafting
    Streamlines the writing process by guiding users to input key details for impactful emails.
  • Tracks Engagement Metrics
    Provides insights on which emails generate clicks and responses to refine outreach strategies.
  • Ensures Persistent Outreach
    Automatically 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 Solutions
    Utilize daily updates and notifications regarding company activities to engage prospects precisely when they express a need for your services.
  • Create Enhanced Prospect Profiles
    Enable tailored outreach strategies aimed at companies based on their specific business circumstances and needs.
  • Receive Timely Notifications
    Stay ahead by responding promptly to developments within target accounts.
  • Stay Informed of Company Activities
    Helps 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 Data
    Utilize a vast repository of verified emails and business information, ensuring accurate and efficient outreach.
  • Find or Verify Emails Efficiently
    Save time and resources by processing multiple emails simultaneously, enhancing productivity for marketing and outreach teams.
  • Seamlessly Integrate Into Workflows
    Connect Hunter's capabilities into your existing systems, enabling advanced customizations tailored for your specific business needs.
  • Ensure Data Protection Compliance
    Conduct 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 Capabilities
    Integrate verified contact data with AI applications to improve lead generation and outreach workflows, providing reliable information without guessing.
  • Automate Your Lead Processes
    Leverage the API to add Hunter’s capabilities directly into your applications, enabling a streamlined lead generation and outreach experience.
  • Instantly Access Email Addresses
    Utilize the browser extension to identify email addresses directly on websites, streamlining the lead generation process as you browse.
  • Effortlessly Manage Leads
    Use the add-on to directly search and validate email addresses within your spreadsheets, making it easier to track and manage leads.
  • Scale Your Outreach Efforts
    Efficiently 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 Tool
    Easily interface Hunter's capabilities with your existing applications and systems to streamline your outreach and lead generation efforts.
  • Find Target Companies
    Use natural language or advanced filters to discover companies that fit your ideal customer profile.
  • Retrieve Professional Emails
    Provide a person's name and domain to obtain the verified email address, including a confidence score on its validity.
  • Check Email Deliverability
    Enhance email deliverability by programmatically validating email addresses with confidence scoring.
  • Get Domain Emails
    Quickly retrieve detailed email addresses associated with any given domain with minimal API calls.
  • Scale Your Outreach
    Adjust 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.

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.

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.

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