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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

    • Multi-Channel Marketing Approach

      Callbox uses a comprehensive multi-channel marketing approach, including telemarketing, email, and social media, to reach potential leads. This strategy is appreciated for its effectiveness in broadening reach and improving lead quality.

    • 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.

    • 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.

    • 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.

    • 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.

    • 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.

    Callbox Reviews

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    Telemarketing Lead Generation for Computer Software Company

    • Call Center Services
    • $10,000 to $49,999
    • Jan. - Aug. 2021
    4.0
    Quality
    4.0
    Schedule
    4.5
    Cost
    2.5
    Willing to Refer
    4.0

    "They were very organized and professional."

    May 14, 2021
    Sales Operations Manager, Computer Software Company
    Anonymous
    Verified
    • Other industries
    • Canada
    • 51-200 Employees
    • Online Review
    • Verified

    Demand Generation Services for Information Services Company

    • Call Center Services
    • Confidential
    • Jan. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "Overall the experience is quite good with them."

    May 6, 2021
    Regional Marketing Manager, Information Services Company
    Anonymous
    Verified
    • Other industries
    • Singapore
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provides ongoing demand generation services for an information services company. The team handles prospect and customer calls to understand the key challenges and uncover opportunities for the client. 

    Lead Generation for IT Solutions Provider

    • Cloud Consulting & SI
    • $10,000 to $49,999
    • Jan. - Apr. 2021
    4.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    3.5
    Willing to Refer
    4.0

    "They were thorough and professional throughout the entire engagement."

    May 4, 2021
    Director of Sales & Marketing, IT Solutions Provider
    Anudeep Parashar
    Verified
    • Other industries
    • Singapore
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provided lead generation services for an IT solutions provider. They handled Google Ads marketing for the project. 

    Lead Generation for Portable Air Purifier Company

    • Call Center Services
    • Less than $10,000
    • Feb. 2021 - Ongoing
    4.0
    Quality
    3.5
    Schedule
    4.0
    Cost
    4.0
    Willing to Refer
    4.0

    "They are doing what we expect them to do."

    Mar 11, 2021
    Director of B2B Sales, Alen Inc
    Anonymous
    Verified
    • Other industries
    • Austin, Texas
    • 51-200 Employees
    • Online Review
    • Verified

    A portable purifier and filter company hired Callbox to head their lead generation efforts in the education, corporate, and healthcare verticals.

    Lead Generation for Cybersecurity Firm

    • Other IT Consulting and SI
    • $10,000 to $49,999
    • Jan. 2021 - Ongoing
    4.0
    Quality
    4.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They were really responsive and courteous to my requests."

    Feb 23, 2021
    CEO, Firebird Security and Compliance Consulting LLC
    Wayne Salas
    Verified
    • Other industries
    • Phoenix, Arizona
    • 1-10 Employees
    • Online Review
    • Verified

    A cybersecurity firm partnered with Callbox in order to assist with lead generation and increase customers for their business.

    Telemarketing Services for Facilities Services Company

    • Call Center Services
    • Less than $10,000
    • Sep. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Our assigned account manager is very thorough and responsive."

    Feb 19, 2021
    Senior Sales Executive, Facilities Services Company
    Shayaan Ali
    Verified
    • Business services
    • Canada
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox performs telemarketing services for a facilities services company. They support the client's campaign. Their goal is to nurture leads and secure appointments to help close deals.

    Lead Generation Services for Communications Provider

    • Advertising
    • Confidential
    • June 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They frequently ask for our feedback to customize and optimize our campaigns."

    Feb 15, 2021
    Account Management, USA Digital
    Matt Estes
    Verified
    • Telecommunications
    • Oklahoma City, Oklahoma
    • 11-50 Employees
    • Online Review
    • Verified

    A communications provider hired Callbox to provide ongoing lead generation services. The team works on phone, email, and social media campaigns. The project goal is to increase the client's qualified leads.

    Customer Outreach & Lead Generation for AI Software Dev Co

    • Other Digital Marketing
    • Confidential
    • Oct. 2020 - Ongoing
    4.5
    Quality
    5.0
    Schedule
    3.5
    Cost
    5.0
    Willing to Refer
    5.0

    "We are very pleased with how the team performs."

     
    Feb 12, 2021
    CEO & Co-Founder, LeapAnalysis
    Anonymous
    Verified
    • Other industries
    • Melbourne, Florida
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox entered a partnership with an AI software development company to provide them with customer outreach and lead generation services. The yearly targets are 3–5 customers beyond the client's internal work.

    Lead Generation for Cleaning Services Provider

    • Other Digital Marketing
    • Less than $10,000
    • Jan. 2020 - Jan. 2021
    4.5
    Quality
    4.0
    Schedule
    4.5
    Cost
    3.0
    Willing to Refer
    4.0

    "Their customer service is impressive."

     
    Feb 11, 2021
    Sales Representative, Anago Cleaning Systems
    Jesus Soto
    Verified
    • Business services
    • Pompano Beach, Florida
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox was hired by a cleaning services provider for lead generation efforts.

    Marketing & Lead Gen for Computer & Network Security Firm

    • Advertising Call Center Services
    • $10,000 to $49,999
    • Sep. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "Their attention to detail and process is very impressive."

    Feb 8, 2021
    President, Blue Reef Networks
    Jim Henderson
    Verified
    • Other industries
    • Dallas, Texas
    • 1-10 Employees
    • Online Review
    • Verified

    Callbox performs marketing campaigns for a computer and network security firm including social media efforts. They also provide call center services to get solid leads and appointments for the company. 

    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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