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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

    • 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.

    • 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.

    • 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.

    • 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.

    • 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.

    Callbox Reviews

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    Services
    Project cost

    Digital Marketing for Business Management Firm

    • Advertising
    • $10,000 to $49,999
    • Jan. 2021 - Nov. 2022
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    3.0
    Willing to Refer
    5.0

    "The outcome was satisfactory as they met most of our targets."

    Oct 25, 2022
    CEO, Business Management Firm
    Anonymous
    • Other industries
    • Montreal, Quebec
    • 11-50 Employees
    • Online Review

    Callbox provided digital marketing for a business management firm. They targeted end customers using emails, managed social media accounts, and launched an outbound filing campaign.

    Lead Generation for Consulting Firm

    • Social Media Marketing
    • $50,000 to $199,999
    • Nov. 2021 - Jan. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They were very professional."

    Oct 17, 2022
    CBO, Practus Advisors
    Graham Kitching
    Verified
    • Other industries
    • Tampa, Florida
    • 201-500 Employees
    • Online Review
    • Verified

    Callbox was hired by a consulting firm for their lead generation. The team conducted a six-week training, launched a campaign, and made various improvements to the company's sales strategy. 

    Lead Generation for B2B Managed IT Services Provider

    • Call Center Services
    • $10,000 to $49,999
    • September 2022
    4.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    3.0
    Willing to Refer
    3.0

    "The most impressive about Callbox was the response time was very quick."

    Oct 3, 2022
    Business Dev Manager, B2B Managed IT Services Provider
    Matthew Franzyshen
    Verified
    • Other industries
    • Somerset, New Jersey
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provided lead generation services for a B2B managed IT services provider. The team proposed a package that included appointment setting via LinkedIn, sales prospecting, email outreach, and cold calling.

    Lead Generation for Cloud Software Organization

    • Call Center Services
    • $10,000 to $49,999
    • June - July 2022
    4.5
    Quality
    4.5
    Schedule
    4.5
    Cost
    4.5
    Willing to Refer
    4.5

    "Callbox generated a number of leads in a short amount of time and helped our pipeline grow steadily."

    Jul 21, 2022
    Head of Sales, Cloud Software Organization
    Anonymous
    Verified
    • Other industries
    • Sydney, Australia
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provides lead generation for a cloud software organization's using voice, email, and social media. Their team was involved in all aspects of the campaign, from email and feedback. 

    Lead Generation for IT-Managed Services Provider

    • Content Marketing Other Digital Marketing
    • $10,000 to $49,999
    • Apr. - July 2021
    3.0
    Quality
    3.0
    Schedule
    3.5
    Cost
    3.0
    Willing to Refer
    3.0

    "Their marketing plan could be reassessed in order to obtain some results for their clients."

    Jun 13, 2022
    Director of Sales Operations, IT Managed Services Provider
    Anonymous
    Verified
    • Other industries
    • Manhattan, New York
    • 51-200 Employees
    • Online Review
    • Verified

    Callbox was tasked to generate leads for an IT-managed services provider. The services included creating content, call scripts, email copies, landing pages, and social media messaging.

    Digital Marketing for Software Dev Company

    • Digital Strategy Other Digital Marketing Social Media Marketing
    • Less than $10,000
    • Jan. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "CallBox is experienced and knowledgeable in the IT service management industry."

    May 20, 2022
    Sales & Marketing VP, Software Development Company
    Anonymous
    Verified
    • Other industries
    • Sunnyvale, California
    • 51-200 Employees
    • Online Review
    • Verified

    Callbox has created and implemented a digital marketing campaign — including email and social media marketing — to promote their new product, achieve better results, and save costs.

    Lead Generation for Financial Service Company

    • Content Marketing Other Digital Marketing Pay Per Click Search Engine Optimization
    • $10,000 to $49,999
    • Apr. 2022 - Ongoing
    4.5
    Quality
    4.5
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    4.5

    "They have a very effective, structured, and efficient process."

    May 11, 2022
    CEO, QualiFi
    Edward DeAngelis
    Verified
    • Financial services
    • Broomall, Pennsylvania
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox was hired to provide lead generation services for a financial service company on phone, & social media, and email marketing. The partners are currently on a 6-month engagement.

    Appointment Scheduling Services for Advertising Agency

    • Advertising
    • $10,000 to $49,999
    • Jan. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We have meetings as needed and all follow up via email is terrific."

    May 9, 2022
    CEO, Madison Media Works
    Sean Driscoll
    Verified
    • Advertising & marketing
    • Knoxville, Tennessee
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox sets up appointments between an advertising agency's staff and potential customers. They've followed up a series of training meetings with customer outreach via social media, email, and phone calls. 

    Lead Generation for IT Services Company

    • Advertising Business Consulting
    • Less than $10,000
    • Apr. 2022 - Ongoing
    3.5
    Quality
    4.0
    Schedule
    4.5
    Cost
    3.0
    Willing to Refer
    3.0

    "Their attentiveness and responsiveness have been great."

    May 3, 2022
    Marketing Manager, IT Services Company
    Anonymous
    Verified
    • Other industries
    • Milwaukee, Wisconsin
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox is an IT services company’s lead generation partner. 

    Lead Generation for Payroll Service Bureau

    • Advertising Business Consulting
    • Less than $10,000
    • May 2022 - May 2023
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    3.0
    Willing to Refer
    5.0

    "Callbox is potentially a great fit for our future growth aspirations."

    May 2, 2022
    Founder, NU Energy Payroll HR
    Anonymous
    Verified
    • Business services
    • Houston, Texas
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox provides lead generation services to help a payroll service bureau grow and scale their business.

    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

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