• Post a Project

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%

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, with clients reporting positive ROI and significant lead generation outcomes. Specific costs were not disclosed, but clients appreciate the value for cost and flexibility offered. Their services include multi-channel outreach, which enhances effectiveness.

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

  • Collaborative and Flexible Approach

    Callbox is praised for its collaborative approach, working closely with clients to refine strategies and optimize outcomes. Their willingness to adapt processes and pivot strategies based on feedback demonstrates their commitment to client success and satisfaction.

  • Effective Lead Generation Performance

    Callbox consistently delivers high-quality leads across various industries, exceeding client expectations. Clients report significant increases in qualified leads, contributing to stronger sales pipelines and improved conversion rates. Their multi-channel approach and expertise in targeting specific markets are praised.

  • Impressive Industry Knowledge and Expertise

    Callbox's industry knowledge and expertise in lead generation are highly valued by clients. Their ability to understand complex client needs and deliver tailored solutions is a key strength, contributing to successful project outcomes.

  • Challenges with Non-English Markets

    Some clients noted that Callbox could improve its services in non-English speaking markets by hiring multilingual agents. This would enhance their ability to engage effectively with prospects in regions like China and Vietnam, where language barriers exist.

  • Strong Project Management and Communication

    Clients appreciate Callbox's structured project management and clear communication. Regular updates via emails, virtual meetings, and detailed reports ensure alignment with client objectives. The team is responsive and adapts quickly to changes, fostering productive collaborations.

  • Effective Use of Multi-Channel Strategies

    Callbox effectively utilizes multi-channel strategies, including email, phone, and social media, to engage prospects and generate leads. This approach has been successful in reaching diverse markets and enhancing client outreach efforts.

Callbox Reviews

Submit a Review
All Filters

0 selected

Sort by
Services
Project Cost
Industry
Location

Appointment Scheduling for Managed IT Services Provider

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

"They are responsive and act as though they are an extended part of our company."

 
Feb 12, 2021
Director of Business Development, Excensure
Steve Moisoff
Verified
  • Other industries
  • New York City, New York
  • 1-10 Employees
  • Online Review
  • Verified

Callbox is the partner of a managed IT services provider in scheduling appointments with prospective clients. The goal of the project is to schedule up to 20 appointments monthly and close a percentage of them.

Telemarketing & Lead Generation for Medical Imaging Company

  • Call Center Services
  • $50,000 to $199,999
  • July 2020 - Ongoing
4.5
Quality
4.5
Schedule
4.0
Cost
5.0
Willing to Refer
5.0

“We’ve definitely gained business tied to work that Callbox does.”

Feb 11, 2021
Director of Marketing, Precision Image Analysis
Anonymous
Verified
  • Other industries
  • Seattle, Washington
  • 11-50 Employees
  • Phone Interview
  • Verified

Callbox provides telemarketing services for a hospital image post-processing company. They use a script, conduct email outreach, and use a multi-touch approach to secure qualified leads.

Lead Generation for IT Cloud Services Company

  • Advertising
  • $50,000 to $199,999
  • June 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their structure, systems, and methods are all very impressive."

Feb 9, 2021
VP Sales, Backup Technology
Mike Colesante
  • Other industries
  • Houston, Texas
  • 11-50 Employees
  • Online Review

An IT cloud services company hired Callbox in order to help them generate leads and revenue. The team is responsible for taking a multimedia approach to lead generation and appointment setting.

Lead Generation Campaign for IT Outsourcing Company

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

"We have a total team approach from both parties which has made this a pleasant and successful campaign to date."

Feb 9, 2021
Director of Sales, IT Outsourcing Firm
Jim Lumpkin
Verified
  • Other industries
  • Atlanta, Georgia
  • 11-50 Employees
  • Online Review
  • Verified

An IT outsourcing company needed to establish brand recognition and develop leads. They partnered with Callbox to develop marketing campaigns that will generate qualified leads.

Appointments & Leads for Technology Company

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

"Callbox has gotten us over 80 solid leads and/or appointments, which our inside teams are now working."

Feb 9, 2021
Sales & Marketing Liaison, Technology Company
Kira Stone
Verified
  • Other industries
  • Washington, District of Columbia
  • 51-200 Employees
  • Online Review
  • Verified

A technology company partnered with Callbox in order to take the lead on their appointment setting and lead gathering efforts to help their business development and sales teams.

Outreach Optimization for Marketing & Tech Company

  • Digital Strategy
  • $10,000 to $49,999
  • Dec. 2020 - Ongoing
4.5
Quality
4.5
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"We create the best workflow possible and we're still trying to improve it."

Feb 8, 2021
Senior Vice President, Atypical Digital
Anonymous
Verified
  • Advertising & marketing
  • New York City, New York
  • 201-500 Employees
  • Online Review
  • Verified

Callbox was hired by a marketing and technology company to help optimize their outreach program. The team serves as an extension for the client's business development process.

Outbound Campaign for Inheritance Funding Company

  • Call Center Services
  • Confidential
  • Dec. 2019 - Dec. 2020
4.5
Quality
5.0
Schedule
4.0
Cost
4.5
Willing to Refer
5.0

"Their responsiveness was impressive."

Feb 8, 2021
VP of Business Development, Inheritance Funding Company
Anonymous
Verified
  • Financial services
  • West Palm Beach, Florida
  • 11-50 Employees
  • Online Review
  • Verified

An inheritance funding company wanted to do an educational campaign across the country to inform their target audience regarding their services. They partnered with Callbox to provide the necessary services.

Introductory Phone Calls for Insurance Resource Firm

  • Call Center Services
  • $10,000 to $49,999
  • June 2020 - Jan. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"Callbox did a great job of discovering who we were and who we needed to connect with."

Feb 8, 2021
Director of Operations, AdvisorServe
Turner Lee
Verified
  • Financial services
  • Woodstock, Georgia
  • 1-10 Employees
  • Online Review
  • Verified

To help an insurance resources firm connect with more prospective clients, Callbox reached out to fee-only financial advisors. They helped set introductory calls via phone, email, and LinkedIn marketing. 

B2B Appointment Setting Services for Finance Company

  • Call Center Services
  • $10,000 to $49,999
  • Nov. 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They are very professional and responsive."

Feb 7, 2021
CEO, ProbateCash
Robin Shapiro
Verified
  • Financial services
  • West Palm Beach, Florida
  • 11-50 Employees
  • Online Review
  • Verified

Callbox provides B2B appointment setting services for a finance firm. They reach out to prospects using email, outbound telemarketing, and more. Then, they set up appointments with the client's internal staff.

Lead Generation Call Center Svcs for Medical Device 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 have an excellent workflow."

Feb 5, 2021
President & Founder, ARC Medical, Inc.
Hal Norris
Verified
  • Other industries
  • Tucker, Georgia
  • 1-10 Employees
  • Online Review
  • Verified

Callbox provides call center services to a medical device company in order to enhance their lead generation efforts. The team reaches out to potential customers and sets up Zoom meetings with the client's reps.

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 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

Contact Callbox

If you’re not seeing exactly what you need here, send this company a custom message. You can talk about your project needs, price, and timeline to get started on your project.

Connect with Callbox on Social

Get connected to see updates from Callbox like new case studies, latest reviews, their latest masterpieces in their portfolio, delivered straight to you.

Additional Connections

(2)