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Callbox Reviews (119), Pricing, Services & Verified Ratings
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Top B2B Lead Generation Experts Worldwide

Since 2004, Callbox has been the trusted leader and top lead generation company, driving high-velocity growth for businesses worldwide. As the largest and most experienced player in B2B sales development, we offer comprehensive solutions from AI-powered prospecting to appointment setting designed to fuel your revenue pipeline.

  • 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 , Singapore

Select Focus Area
Back Office Outsourcing
Customer Service Outsourcing
Outbound Services
Industries
Information technology
20%
Telecommunications
15%
Advertising & marketing
10%
Business services
10%
Financial services
10%
Medical
10%
Education
5%
Hospitality & leisure
5%
Manufacturing
5%
Other industries
5%
Retail
5%
Clients
Enterprise (>$1B)
45%
Midmarket ($10M - $1B)
40%
Small Business (<$10M)
15%
Certified in:
Sales Outsourcing Call Center Services B2B Lead Generation B2B Appointment Setting

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 good value for cost, frequently delivering high-quality leads and appointments. Clients appreciate the flexibility and responsiveness of their team, although some mention a desire for more personalized services and improved reporting. Overall, they are seen as a reliable partner for lead generation.

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

  • Efficient Workflow and Coordination

    The workflow between Callbox and its clients is often described as efficient and well-coordinated, with teams working seamlessly together to achieve project goals.

  • Successful in Increasing Brand Awareness

    Callbox has successfully helped clients increase brand awareness through targeted outreach and marketing campaigns, contributing to a stronger presence in their respective markets.

  • Challenges with Non-English Speaking Markets

    Some clients have noted challenges in markets where English is not the primary language, suggesting the need for multilingual support to improve engagement in regions like Vietnam and China.

  • Cost-Effective Solutions

    Clients have noted that Callbox offers competitive pricing for its services, providing good value for the cost, especially when compared to hiring in-house teams for similar tasks.

  • Effective in Building Long-Term Relationships

    Callbox's efforts have not only increased immediate sales opportunities but also fostered long-term relationships with prospects, contributing to sustained business growth for clients.

  • Comprehensive Multi-Channel Marketing Strategies

    The use of multi-channel marketing strategies, including email, social media, and telemarketing, is a recurring theme in reviews. This approach has been effective in reaching diverse audiences and increasing brand awareness for clients.

Callbox Reviews

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Lead Generation for 3D Printing Co

  • Demand Generation Marketing Sales Outsourcing
  • B2B Appointment Setting
    +2
  • $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."

Feb 6, 2025
Head of Marketing, BASF 3D Pinritng Solutions
Alexander Levit
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  • Other industries
  • Heidelberg, Germany
  • 201-500 Employees
  • Online Review
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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."

Jan 9, 2025
Sales Operations Specialist, IT Services Company
Anonymous
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  • Other industries
  • Singapore
  • 51-200 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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
  • B2B Appointment Setting
    +2
  • 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."

Jan 7, 2025
Marketing Manager APAC+Japan, Quadient
Andrew Inkpen
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  • Information technology
  • France
  • 1,001-5,000 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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."

Dec 23, 2024
Senior Regional Marketing Manager (APAC), Cepheid
Varun Suneja
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  • Other industries
  • Singapore
  • 1,001-5,000 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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
  • Claims Processing
    +2
  • 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."

Dec 19, 2024
Head of Business Dev Asia Pacific, Cochrane Global
Jaco Marais
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  • Manufacturing
  • Tokyo, Japan
  • 5,001-10,000 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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."

Dec 19, 2024
Executive, Hello Health Group
Anonymous
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  • Other industries
  • Vietnam
  • 201-500 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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
  • B2B Appointment Setting
    +3
  • $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."

Dec 17, 2024
Business Development Manager, Logistics Company
Anonymous
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  • Supply Chain, Logistics, and Transport
  • Singapore
  • 11-50 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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."

May 30, 2023
Sales Manager, Yularatech
Shahana Rasheed
Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> Verified
  • Other industries
  • Australia
  • 11-50 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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."

Oct 19, 2022
CMO, AutoPylot Technologies
Steve Shaw
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  • Other industries
  • Sonoma, California
  • 1-10 Employees
  • Online Review
  • Learn More " data-tooltip-position=".profile-review__reviewer-verification-badge-title" data-tooltip-props="top-center mobile_top-center large"> 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
March 4, 2026

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 methodology, the International Credit Risk Assessment rating is determined by our analysis of a credit report and third-party data." > 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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