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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
    250 - 999
  • Locations
    Los Angeles, CA
  • Year founded
    Founded 2004
  • Languages

6 Languages that we service

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

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
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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.

    • 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.

    • 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.

    • 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.

    • 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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    Call Center Services for Consulting Firm

    • Call Center Services
    • $10,000 to $49,999
    • Dec. 2020 - Apr. 2021
    4.0
    Quality
    4.0
    Schedule
    4.0
    Cost
    3.5
    Willing to Refer
    4.0

    "Callbox is a good partner to engage for lead generation activities."

    Business Development Executive, Consulting Firm
    Anonymous
    Verified
    • IT Services
    • Singapore
    • 51-200 Employees
    • Online Review
    • Verified

    Callbox was hired by a consulting firm to generate leads for their sales team. The team provided conversational scripts for multiple channels and handled the client's lead generation campaign.

    Go-To-Market Strat (GTM) & Campaign for Cybersecurity Firm

    • Advertising
    • $10,000 to $49,999
    • Feb. - June 2021
    4.5
    Quality
    4.5
    Schedule
    4.0
    Cost
    5.0
    Willing to Refer
    4.5

    "We appreciated their response speed."

    CMO, Cybersecurity Firm
    Rishika Mehrotra
    Verified
    • IT Services
    • India
    • 51-200 Employees
    • Online Review
    • Verified

    Market Research for Color Technology Firm

    • Market Research
    • Less than $10,000
    • Mar. 2021 - Ongoing
    4.0
    Quality
    4.0
    Schedule
    4.0
    Cost
    4.0
    Willing to Refer
    4.5

    "They ramp up productivity as they get more familiar and comfortable with the audience."

    Marketing Analytics & Visibility Head, Color Technology Firm
    Olivier Tulliez
    Verified
    • Manufacturing
    • Grand Rapids, Michigan
    • 51-200 Employees
    • Online Review
    • Verified

    Callbox provides market research consultations for a color technology firm. Their service discusses the qualifying questions needed to reach the client's target audience, ultimately increasing their relevance.

    Call Center Services for Industrial Printer Manufacturer

    • Call Center Services
    • $10,000 to $49,999
    • Oct. 2020 - Ongoing
    4.0
    Quality
    4.0
    Schedule
    3.0
    Cost
    5.0
    Willing to Refer
    3.5

    "Feedback was good and consistent."

    North America Marketing Analyst, Videojet, Inc.
    Anonymous
    Verified
    • Manufacturing
    • Wood Dale, Illinois
    • 201-500 Employees
    • Online Review
    • Verified

    Callbox provides ongoing call center services for an industrial printer manufacturer. The team handles accounts requalification. They also record all the data found and send it to the client once weekly.

    Call Center Services for Cybersecurity Company

    • Call Center Services
    • $10,000 to $49,999
    • Jan. 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "They are always willing to test new processes and strategies and are great at collaboration."

    VP Sales, Cybersecurity Company
    Josh Tenby
    Verified
    • Software
    • Tel Aviv, Israel
    • 201-500 Employees
    • Online Review
    • Verified

    To increase brand awareness, a cybersecurity company hired Callbox to provide outbound marketing services. The team is in charge of handling email and LI campaigns and scheduling calls with prospects.

    Call Center Services for Clinical Solutions Company

    • Call Center Services
    • $10,000 to $49,999
    • May 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They are very fast and persistent in calling all our prospects despite this challenging time."

    Business Development Specialist, Clinical Solutions Company
    Anonymous
    • Healthcare
    • Boston, Massachusetts
    • 10,001+ Employees
    • Online Review

    Callbox provides telemarketing services for a clinical solutions company. The team is handling customer profiling and outbound marketing services for the client.

    Outbound Sales & Marketing for SaaS Based Company

    • Call Center Services
    • $10,000 to $49,999
    • July 2020 - Ongoing
    4.5
    Quality
    4.0
    Schedule
    4.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The most impressive attribute of Callbox was their understanding of our business and the prospects we were targeting."

    Technical Sales Engineer, Allotrac
    Matt Edgar
    Verified
    • IT Services
    • Wollongong, Australia
    • 11-50 Employees
    • Online Review
    • Verified

    An innovative software solutions company partnered with Callbox to provide an outbound sales and marketing team which specializes in account-based marketing and multi-channel marketing services.

    Outbound Marketing for Material Handling Company

    • Advertising
    • $10,000 to $49,999
    • Oct. 2020 - Jan. 2021
    4.5
    Quality
    4.0
    Schedule
    4.5
    Cost
    4.0
    Willing to Refer
    4.5

    "We were very pleased with the vast improvements in metrics."

    Marketing Analyst for SEA Region, Equipment Company
    Jacqueline Tan
    Verified
    • Manufacturing
    • Singapore
    • 51-200 Employees
    • Online Review
    • Verified

    Callbox was hired to create outbound marketing campaigns for an equipment company. The team was in charge of growing the client's database by acquiring new contacts and generating more leads from those.

    Demand Generation Services for Consulting Company

    • Other IT Consulting and SI
    • $10,000 to $49,999
    • Jan. 2021 - Ongoing
    4.5
    Quality
    4.5
    Schedule
    4.5
    Cost
    4.0
    Willing to Refer
    4.5

    "They always take feedback positively and are remarkable at following up."

    Head of Sales & Marketing, Simplify Consulting Sdn. Bhd.
    Kesava Voodi
    Verified
    • IT Services
    • Kuala Lumpur, Malaysia
    • 11-50 Employees
    • Online Review
    • Verified

    Callbox provides ongoing demand generation services for a consulting company. The team creates a list of targeted prospects which helps the client with content development for their lead generation initiatives.

    Sales Consulting for IT Services Company

    • Advertising
    • $10,000 to $49,999
    • Jan. - Apr. 2021
    4.5
    Quality
    4.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    4.5

    "They have always taken feedback positively and are remarkable at following up."

    Head of Sales & Marketing, IT Services Company
    Anonymous
    • IT Services
    • Kuala Lumpur, Malaysia
    • 11-50 Employees
    • Online Review

    Callbox provides consultation for an IT services company to help with their demand generation initiatives such as event management, inside sales, and digital marketing.

    Services provided

    • SEO
    • Web Development
    • Pay Per click
    • Web design

    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 - 9

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