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Callbox

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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

Service Lines
Sales Outsourcing
60%
Customer Service Outsourcing
20%
Back Office Outsourcing
10%
Call Center Services
10%
Select Focus Area
Back Office Outsourcing
Data Entry & Processing
100%
Customer Service Outsourcing
Chat Support Services
100%
Outbound Services
Third party verification
100%
Sales Outsourcing
B2B Lead Generation
83%
B2B Appointment Setting
17%
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 for lead generation services, typically charging between $12,000 and $80,000 annually. Clients report high value for cost, with successful appointment setting and lead conversion, indicating strong ROI and effective project management.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 101 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

  • Challenges with Non-English Speaking Markets

    Some clients noted that Callbox's services are less effective in non-English speaking regions due to language barriers. Expanding multilingual capabilities could enhance their service offerings.

  • Effective Appointment Setting

    Callbox is effective in setting appointments, with clients noting an increase in sales meetings and business opportunities as a direct result of their efforts.

  • High Client Satisfaction and Repeat Business

    Many clients report satisfaction with Callbox's services, leading to repeat business and contract renewals. Their ability to meet or exceed client expectations is a recurring theme.

  • Responsive and Professional Team

    Clients commend Callbox for their responsiveness and professionalism. The team is noted for being communicative, accommodating client requests promptly, and maintaining a high level of professionalism throughout engagements.

  • Effective Data Management and Lead Qualification

    Callbox's data management and lead qualification processes are effective, ensuring that clients receive accurate and relevant information to support their sales efforts.

  • Positive Impact on Brand Awareness

    Clients report that Callbox's efforts have positively impacted their brand awareness, helping them reach new markets and establish a stronger presence.

Callbox Reviews

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Appointment Setting for Consumer Products Company

  • Call Center Services
  • Less than $10,000
  • Jan. 2015 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They improved our revenue."

Aug 12, 2017
Senior Manager, Consumer Products Company
Anonymous
  • Other industries
  • Brockton, Massachusetts
  • 5,001-10,000 Employees
  • Survey Response

Showing 121-121 of 121 Reviews

Verified means Clutch independently confirmed Callbox is a legally registered business,
financially sound (Creditsafe: Low Risk), and backed by 114 verified client reviews averaging 4.6 stars.

Learn More
Verified Client Reviews
114
Overall Review Rating
4.6
Source
Clutch
Last Updated
August 20, 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 Low Risk
Source Creditsafe
Last Updated February 2, 2021
Learn More About The Clutch Verification Process

Locations (2)

4924 Balboa Blvd # 353 Los Angeles, CA, United States 91316

2 - 5

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