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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

  • 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.

  • 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.

  • 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.

  • 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.

  • 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 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)

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