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Top B2B Lead Generation Experts Worldwide

Since 2004, Callbox has been the trusted leader and top lead generation company, driving growth for businesses worldwide. As the largest and most experienced player in the B2B lead generation field, we offer comprehensive solutions encompassing lead generation, appointment setting, and data-driven strategies designed to fuel your success. Our multi-touch, multi-channel approach sets us apart. We seamlessly integrate live conversations with email, social media, search, and direct marketing, ensuring engagement with key decision-makers at every stage of the conversion cycle. This holistic strategy maximizes your ROI and delivers qualified leads.

  • Undisclosed
  • Undisclosed
  • 250 - 999
  • Los Angeles, CA
  • Founded 2004

6 Languages that we service

  • English
  • Mandarin
  • Portuguese
  • Cantonese
  • Vietnamese
  • Spanish

2 Locations

  • Los Angeles , CA
  • Singapore

Focus

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    Pricing Snapshot

    Min. project size Undisclosed
    Avg. hourly rate Undisclosed
    Rating for cost 4.3 /5

    What Clients Have Said

    Callbox offers competitive pricing with a focus on value for cost, delivering high-quality leads and appointments. Clients note positive ROI and effective project management, often exceeding lead generation expectations. Their flexibility and responsiveness are highlighted, though some suggest improvements in regional market understanding and lead qualification.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 100 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000
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    Callbox Review Insights

    Overall Review Rating

    4.6
    • Quality 4.5
    • Schedule 4.6
    • Cost 4.3
    • Willing to Refer 4.6

    Top Mentions

    Review Highlights

    • High Client Satisfaction and Long-Term Partnerships

      Many clients express satisfaction with Callbox’s services, leading to long-term partnerships. Clients appreciate their commitment to achieving business objectives and their willingness to adjust strategies to improve outcomes.

    • Challenges with Non-English Markets

      Some clients indicate that Callbox could improve their effectiveness in non-English speaking markets. Expanding language capabilities could enhance their reach and lead generation in diverse regions.

    • Professionalism and Customer Service

      Callbox’s professionalism and customer service are frequently highlighted. Clients note their courteous and proactive approach, ensuring a smooth and productive collaboration.

    • Competitive Pricing and Value

      Clients find Callbox’s pricing competitive and the services offered provide good value, especially in comparison to other vendors. This is a significant factor in selecting Callbox as a partner.

    • Flexibility in Campaign Adjustments

      Callbox is noted for their flexibility in adjusting campaigns based on client feedback and changing market conditions. This adaptability is crucial for optimizing lead generation efforts.

    • Industry Expertise and Adaptability

      Callbox’s ability to understand client industries and adapt strategies accordingly is highly valued. They take time to learn about client businesses, which enhances their ability to generate relevant leads.

    Callbox Reviews

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    All Filters

    Lead Generation for 3D Printing Co

    • Demand Generation Marketing Sales Outsourcing
    • $50,000 to $199,999
    • Jan. 2024 - Apr. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They were able to find the right persona, which was very difficult for us."

    Head of Marketing, BASF 3D Pinritng Solutions
    Alexander Levit
    • Chemicals & Biotechnology
    • Heidelberg, Germany
    • 201-500 Employees
    • Online Review 
    • Verified

    Callbox has generated leads for a 3D printing company. The team has been tasked with expanding the client's business in the American market.

    Lead Generation for IT Services Company

    • Email Marketing Market Research
    • Confidential
    • Apr. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    4.0

    "They're very prompt in responding to emails."

    Sales Operations Specialist, IT Services Company
    Anonymous
    • IT Services
    • Singapore
    • 51-200 Employees
    • Online Review 
    • Verified

    Callbox provides lead generation services for an IT services company. Their work focuses on reaching out to contacts and providing qualified leads based on targeted industries and countries.

    Sales Outsourcing for Software Company

    • Sales Outsourcing
    • Confidential
    • Jan. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They over-deliver and meet every area of our goals."

    Marketing Manager APAC+Japan, Quadient
    Andrew Inkpen
    • Information technology
    • France
    • 1,001-5,000 Employees
    • Online Review 
    • Verified

    Callbox provides comprehensive SDR services for a software company. The team is responsible for lead generation and nurturing efforts, including identifying, engaging, and qualifying prospects.

    Account-Based Marketing & Lead Gen for Diagnostics Co

    • Account-Based Marketing Call Center Services Demand Generation Marketing
    • Less than $10,000
    • Sep. 2024 - Ongoing
    4.5
    Quality
    4.5
    Schedule
    4.0
    Cost
    3.5
    Willing to Refer
    4.5

    "Callbox is an organization that is professionally managed and process-oriented."

    Senior Regional Marketing Manager (APAC), Cepheid
    Varun Suneja
    • Healthcare
    • Singapore
    • 1,001-5,000 Employees
    • Online Review 
    • Verified

    Callbox provides lead generation services for a diagnostics company. The team has identified, qualified, and engaged leads for the client, refined the client's ICPs and targeting strategies, and created lead briefs.

    Lead Gen & Appointment-Setting for Security Solutions Co

    • Back Office Outsourcing Business Valuation Services Call Center Services
    • Confidential
    • Jan. 2023 - Dec. 2024
    4.5
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Callbox is trusted by top global companies to improve sales cycles, generate high-value leads, and support market growth."

    Head of Business Dev Asia Pacific, Cochrane Global
    Jaco Marais
    • Manufacturing
    • Tokyo, Japan
    • 5,001-10,000 Employees
    • Online Review 
    • Verified

    Callbox provided lead generation, sales support, and appointment-setting services for a security solutions company. The goal was to increase the client's sales pipeline and B2B and B2C connections.

    Call Center Services for Healthcare Company

    • Call Center Services
    • $10,000 to $49,999
    • Oct. 2024 - Feb. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Callbox was very responsive and flexible in their approach."

    Executive, Hello Health Group
    Anonymous
    • Healthcare
    • Vietnam
    • 201-500 Employees
    • Online Review 
    • Verified

    Callbox provided call center services for a healthcare company. The goal was to generate outreach via multi-channels using the client's existing database for core and non-core audiences.

    Lead Generation Services for Logistics Company

    • Email Marketing Sales Outsourcing Social Media Marketing
    • $10,000 to $49,999
    • Nov. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "They're a great partner to work with."

    Business Development Manager, Logistics Company
    Anonymous
    • Supply Chain, Logistics, and Transport
    • Singapore
    • 11-50 Employees
    • Online Review 
    • Verified

    Callbox provides lead generation services for a logistics company. Their tasks include email and call outreach, appointment setting, lead qualification, and LinkedIn management.

    Lead Generation & Webinar Mgmt for IT Services Co

    • Sales Outsourcing
    • Confidential
    • Jan. 2020 - June 2023
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Callbox exhibited proactive problem-solving skills."

    Sales Manager, Yularatech
    Shahana Rasheed
    • IT Services
    • Australia
    • 11-50 Employees
    • Online Review 
    • Verified

    Callbox provides lead generation services to an IT services company. The team generates leads, schedules appointments with key stakeholders and decision-makers, and organizes and manages webinars.

    Demand Generation Services for SaaS Company

    • Other Digital Marketing
    • $10,000 to $49,999
    • Aug. 2022 - Ongoing
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Callbox is an experienced demand generation company."

    CMO, AutoPylot Technologies
    Steve Shaw
    • Software
    • Sonoma, California
    • 1-10 Employees
    • Online Review 
    • Verified

    A SaaS provider has engaged with Callbox for demand generation. They create a list of target accounts, a landing page, email and message copy, a calling script, and a multi-channel demand generation program.

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    112
    Overall Review Rating
    4.6
    Source
    Clutch
    Last Updated
    February 6, 2025
    Business Entity
    Business Entity Name Callbox, Inc.
    Source Delaware Secretary of State
    Jurisdiction of Formation Delaware
    Date of Formation January 12, 2012
    Status Active
    Last Updated November 15, 2020
    ID 5095306
    Credit Report Results
    International Credit Risk Assessment Low Risk
    Source Creditsafe
    Last Updated February 1, 2021
    Learn More About The Clutch Verification Process

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