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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.

  • Min project size
    Undisclosed
  • Hourly rate
    Undisclosed
  • Employees
    1,000 - 9,999
  • Locations
    Los Angeles, CA
  • Year founded
    Founded 2004
  • Languages

6 Languages that we service

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

2 Locations

  • Los Angeles , CA
  • Singapore

No have been added yet...

    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

    Select a service to see pricing information

    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

    • Strong Project Management and Communication

      Clients praise Callbox for their project management skills, noting their responsiveness, regular updates, and effective communication. Weekly meetings and detailed reports keep clients informed and engaged.

    • 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.

    • 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.

    • 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.

    • Effective Lead Generation and Appointment Setting

      Callbox consistently delivers qualified leads and appointments, exceeding client expectations. Clients report a significant increase in sales opportunities, indicating Callbox’s effectiveness in lead generation and nurturing processes.

    • 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.

    Callbox Reviews

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    Call Center Services for International Logistics Firm

    • Advertising Call Center Services
    • $10,000 to $49,999
    • Apr. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "Their communication has been seamless, and they always deliver on time."

    Apr 19, 2022
    Director of Business Dev, International Logistics Firm
    Kreg Anderson
    Verified
    • Other industries
    • Detroit, Michigan
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provides ongoing call center services for an international logistics company. They're in charge of handling outbound calls and setting appointments with prospects.

    Lead Generation for Software Company

    • Call Center Services
    • $10,000 to $49,999
    • Apr. - May 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their commitment to learning our business process and needs was impressive."

    Apr 18, 2022
    Regional Sales Manager, Virtual Mgr
    Brian J. Damico
    Verified
    • Other industries
    • Pittsburgh, Pennsylvania
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provided lead generation services for a software company. Their main responsibility was to handle outbound calls. The goal was to acquire more leads for the client's sales pipeline.

    Digital Marketing for Travel Agency

    • Digital Strategy Other Digital Marketing UX/UI Design
    • $200,000 to $999,999
    • Jan. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "They have a very sophisticated and integrated approach to digital marketing and business development."

    Apr 15, 2022
    President & Founder, Ascent Performance Group
    Scott Andrews
    Verified
    • Other industries
    • Houston, Texas
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox is expected to help a travel agency with their digital marketing campaign. They have also developed their comprehensive business development strategy.

    Lead Generation for Software Company

    • Advertising Business Consulting Call Center Services
    • $10,000 to $49,999
    • Mar. - June 2022
    5.0
    Quality
    4.0
    Schedule
    3.5
    Cost
    5.0
    Willing to Refer
    4.0

    "They had a very clear and structured process."

    Apr 14, 2022
    VP of Business Development, Software Company
    Anonymous
    Verified
    • Other industries
    • Belgium
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox is in charge of developing a software company's digital presence in the Asia-Pacific region. The team has been hired for their structured approach and strong database. 

    Lead Generation for Logistics Startup

    • Business Consulting Call Center Services HR Consulting
    • $10,000 to $49,999
    • January 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They have a complete team to cover all bases from initial set up through the ongoing process of being a customer."

    Apr 14, 2022
    National Sales Manager, International Logistics Solutions
    Jeffrey Reinhart
    Verified
    • Other industries
    • Miami, Florida
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox augmented a lead generation manager for a logistics startup. They provided a presentation that would help the company grow.

    Lead Generation for Bilingual Education Platform

    • Other Digital Marketing
    • $10,000 to $49,999
    • Apr. 2022 - Ongoing
    4.5
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "They are very focused on delivering what they commit to."

    Apr 13, 2022
    Commercial Consultant, Maple Bear Global Schools
    José Mafra
    • Education
    • Toronto, Ontario
    • 51-200 Employees
    • Online Review

    Callbox provides lead generation services for a bilingual education platform. The team handles the client's social media channels, SMS, calls, webinars, and more.

    Lead Generation for Supply Chain Software Firm

    • Content Marketing
    • $10,000 to $49,999
    • Apr. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their workflow has been excellent."

    Apr 12, 2022
    CEO, b2wise
    Steve Christensen
    Verified
    • Other industries
    • Verona, New Jersey
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox is helping a supply chain software company generate leads from targeted accounts and contacts for their sales pipeline.

    Call Center Services for Recruitment Firm

    • Call Center Services
    • Less than $10,000
    • Jan. 2017 - Feb. 2022
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We were impressed with the effort they put in."

    Apr 7, 2022
    President, Nearterm
    Jim Higgins
    Verified
    • Business services
    • Houston, Texas
    • 11-50 Employees
    • Online Review
    • Verified

    Looking to attain more leads, a recruitment firm hired Callbox for their call center services. The team was in charge of setting appointments.

    BI & Analytics for IT Consultancy Company

    • BI & Big Data Consulting & SI
    • $50,000 to $199,999
    • Feb. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.0
    Cost
    2.0
    Willing to Refer
    5.0

    "They are very professional."

    Apr 7, 2022
    Founder, CINCO ENTERPRISE
    Anonymous
    Verified
    • Advertising & marketing
    • Miami, Florida
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox has partnered with an IT consultancy company in developing a social media analysis integrated with BI. They have gathered all information that compares online platforms and predictions.

    Lead Generation for SaaS Company

    • Content Marketing
    • $50,000 to $199,999
    • Feb. 2021 - Ongoing
    4.0
    Quality
    4.0
    Schedule
    3.0
    Cost
    5.0
    Willing to Refer
    4.0

    "If there are any unclear points, Callbox does not hesitate to ask me questions."

    Sep 15, 2021
    Marketing Director, SaaS Company
    Anonymous
    Verified
    • Other industries
    • Tokyo, Japan
    • 1,001-5,000 Employees
    • Online Review
    • Verified

    Callbox has been hired by a SaaS company to head their lead generation efforts. Currently, they are making a targeted list of prospects and developing marketing content.

    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
    May 8, 2025

    Business Entity

    Business Entity Name Callbox, Inc.
    Source Delaware Secretary of State
    Jurisdiction of Formation Delaware
    Date of Formation January 13, 2012
    Status Active
    Last Updated November 16, 2020
    ID 5095306

    Credit Report Results

    International Credit Risk Assessment Low Risk
    Source Creditsafe
    Last Updated February 2, 2021
    Learn More About The Clutch Verification Process

    Locations (2)

    4924 Balboa Blvd # 353 Los AngelesCA, United States 91316

    2 - 5

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