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.
Our multi-touch, multi-channel approach is built for the 2026 landscape. We seamlessly integrate intent-based conversations with email, LinkedIn, social media, search, and account-based marketing (ABM). This holistic strategy ensures engagement with key decision-makers at every stage of the conversion cycle, maximizing your ROI and delivering sales-qualified leads (SQLs).
Headquartered in Encino, CA, with a global footprint, we have successfully completed over 20,000 campaigns across diverse B2B verticals and global markets. This extensive track record makes us a top outsourced lead generation partner you can rely on.
Our Edge as a Top Lead Generation Company:
Proprietary Data Stack: Access to a vast, verified in-house B2B database with real-time intent signals.
Personalized Lead Nurturing: Automated, yet human-led programs to turn cold leads into warm prospects.
Precision ABM: Advanced Account-Based Marketing for hyper-targeted outreach to high-value accounts.
Full-Funnel Engagement: Content syndication, lead re-activation, and retargeting to maximize touchpoint density.
What’s New at Callbox
Co-managed Sales Development Staff Augmentation Integrate dedicated SDRs directly into your internal workflow. This model combines the control of an in-house team with Callbox’s premium data, AI-powered tech stack, and recruitment infrastructure to scale your pipeline with lower overhead.
Ready to Scale? Whether you are looking to penetrate new markets, increase conversion rates, or hit aggressive revenue targets, Callbox provides the data-driven lead generation and sales expertise to deliver measurable results. Partner with the industry leader today.
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.
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.
Professionalism and Commitment to Excellence
Callbox is lauded for their professionalism and commitment to excellence. Their teams are described as dedicated, knowledgeable, and efficient, consistently delivering high-quality service and achieving client goals.
Positive ROI and Business Impact
Clients report positive ROI and significant business impact from Callbox's lead generation efforts. The team's ability to deliver measurable results, such as increased sales opportunities and improved brand awareness, is consistently recognized.
Successful Engagement in Complex Industries
Callbox has successfully engaged in complex industries such as cybersecurity and healthcare, delivering valuable leads and insights. Their ability to navigate industry-specific challenges and deliver results is highly regarded by clients.
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.
High-Quality Customer Service
Clients commend Callbox for their exceptional customer service, highlighting their ability to understand client needs, provide valuable insights, and maintain a positive, can-do attitude. Their dedication to client satisfaction is evident in their proactive communication and support.
Call Center Services for International Logistics Firm
AdvertisingCall Center Services
$10,000 to $49,999
Apr. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"Their communication has been seamless, and they always deliver on time."
Apr 19, 2022
Director of Business Dev, International Logistics Firm
Kreg Anderson
Verified
Other industries
Detroit, Michigan
11-50 Employees
Online Review
Verified
Callbox provides ongoing call center services for an international logistics company. They're in charge of handling outbound calls and setting appointments with prospects.
The client has been pleased with Callbox's services — in fact, they commend them for consistently reaching the right customers. The team creates a smooth workflow through their top-notch communication skills and punctuality. Overall, customers can expect a reliable partner.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am the Business Development manager for an International Logistics company providing all of your logistics needs from point of origin to the final mile.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
We were looking for a way to increase warm leads and appointments for our inside sales team,
SOLUTION
How did you select this vendor?
Callbox offered a turn key solution to providing just that, putting sales executives in front of decision makers.
Describe the scope of their work in detail.
They call on target customers and establish need. They then provide the sales rep. with the prospects contact information or the appointment details.
What was the team composition?
I worked with their business development manager to establish and create a customized outbound call solution.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
I was extremely impressed by their ability to reach the right customers and the right people in the respective organization.
How effective was the workflow between your team and theirs?
Their communication has been seamless, and they always deliver on time.
What did you find most impressive about this company?
They were very effective in communicating what they were going to deliver and kept every promise they made.
Is there any area for improvement or anything that could have been done differently?
Everything was exactly as I hoped and then some.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
5.0
NPS
Lead Generation for Software Company
Call Center Services
$10,000 to $49,999
Apr. - May 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Their commitment to learning our business process and needs was impressive."
Apr 18, 2022
Regional Sales Manager, Virtual Mgr
Brian J. Damico
Verified
Other industries
Pittsburgh, Pennsylvania
11-50 Employees
Online Review
Verified
Callbox provided lead generation services for a software company. Their main responsibility was to handle outbound calls. The goal was to acquire more leads for the client's sales pipeline.
Through Callbox's lead generation efforts, the client increased their sales leads by 50%. Both sides worked closely together, touching base consistently throughout the project. The team impressed with their dedication to understanding the client's business process and requirements.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm the Regional Sales Manager with Virtual mgr.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
We were looking to build leads into the sales pipeline in EVS.
SOLUTION
How did you select this vendor?
We found Callbox online and researched them.
Describe the scope of their work in detail.
They helped us with lead generation with outbound calls.
What was the team composition?
We worked closely with the sales associates.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
We've increased the sales pipeline by 50%.
How effective was the workflow between your team and theirs?
We have weekly meetings with the project managers.
What did you find most impressive about this company?
Their commitment to learning our business process and needs was impressive.
Is there any area for improvement or anything that could have been done differently?
I would like to use Slack to communicate more with them.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Digital Marketing for Travel Agency
Digital StrategyOther Digital MarketingUX/UI Design
$200,000 to $999,999
Jan. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"They have a very sophisticated and integrated approach to digital marketing and business development."
Apr 15, 2022
President & Founder, Ascent Performance Group
Scott Andrews
Verified
Other industries
Houston, Texas
1-10 Employees
Online Review
Verified
Callbox is expected to help a travel agency with their digital marketing campaign. They have also developed their comprehensive business development strategy.
The client hasn't engaged the provider on a project yet, but they're happy with Callbox's professionalism and sophisticated approach to digital marketing so far.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am the president and founder of an meeting and event planning company that specialized in group incentive travel.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox, and what were your goals?
We are not currently engaged with Callbox, however we have extensively evaluated their services and hope to engage them in the future to help us with our digital marketing and new business development.
SOLUTION
How did you select this vendor and what were the deciding factors?
We have not selected Callbox, but if we do the the deciding factors are their professionalism and comprehensive and integrated flat-form for their services.
Describe the scope of work in detail, including the project steps, key deliverables, and marking tools used.
We are not currently working with Callbox, however, our account manager Katrina, has done an excellent job of assessing our current digital marketing approach and of developing a comprehensive business development strategy.
How many resources from the vendor's team worked with you, and what were their positions?
We are not currently working with Callbox.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
We have not engage Callbox on a project to date.
How effective was the workflow between your team and theirs?
We have not engage Callbox on a project to date.
What did you find most impressive or unique about this company?
Callbox is very professional. They have a very sophisticated and integrated approach to digital marketing and business development.
Are there any areas for improvement or something they could have done differently?
None come to mind.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
5.0
NPS
Lead Generation for Software Company
AdvertisingBusiness ConsultingCall Center Services
$10,000 to $49,999
Mar. - June 2022
5.0
Quality
4.0
Schedule
3.5
Cost
5.0
Willing to Refer
4.0
"They had a very clear and structured process."
Apr 14, 2022
VP of Business Development, Software Company
Anonymous
Verified
Other industries
Belgium
11-50 Employees
Online Review
Verified
Callbox is in charge of developing a software company's digital presence in the Asia-Pacific region. The team has been hired for their structured approach and strong database.
Callbox brought a number of good opportunities for the client. They have a structured and clear workflow that has done the job satisfyingly.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
in charge of international development
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox, and what were your goals??
develop our presence in apac
SOLUTION
How did you select this vendor and what were the deciding factors?
they have structured approach and strong database
Describe the project in detail and walk through their service package, including any calling tools used.
they provide appointment services
Who did you work with and what was the feedback process like?
Roma was our CSM, the collaboration process went very well and communication was always clear
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the service?
they brought us a number of good opportunities
Describe their project management style, including communication tools and timeliness.
very structured and clear
What did you find most impressive or unique about this company?
They had a very clear and structured process.
Are there any areas for improvement or something they could have done differently?
everything is good, they are doing the job !
RATINGS
5.0
"good partner"
Quality
4.0
Service & Deliverables
"thanks"
Schedule
3.5
On time / deadlines
"good"
Cost
5.0
Value / within estimates
"nice"
Willing to Refer
4.0
NPS
"good partner
Lead Generation for Logistics Startup
Business ConsultingCall Center ServicesHR Consulting
$10,000 to $49,999
January 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They have a complete team to cover all bases from initial set up through the ongoing process of being a customer."
Apr 14, 2022
National Sales Manager, International Logistics Solutions
Jeffrey Reinhart
Verified
Other industries
Miami, Florida
11-50 Employees
Online Review
Verified
Callbox augmented a lead generation manager for a logistics startup. They provided a presentation that would help the company grow.
Callbox was very knowledgeable. They answered questions promptly and concisely that showed a complete team that could cover all bases. Although the client couldn't fully commit due to the size of their company at the time, they were happy with the value the external team had brought to the table.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am the Director of Enterprise Sales for an eCommerce logistics company.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox, and what were your goals??
We were looking into CallBox as a lead generator/appointment setter for our sales team
SOLUTION
How did you select this vendor and what were the deciding factors?
Although we did not move forward with CallBox, Grace's presentation and follow up exceeded my expectations.
Describe the project in detail and walk through their service package, including any calling tools used.
We did not move forward with the project. We are a young company and not ready to get involved with CallBox at the time.
Who did you work with and what was the feedback process like?
I worked with Grace. She was extremely knowledgeable, answered all of my questions and presented in a way that I felt she understood her company and the value they bring to the table.
RESULTS & FEEDBACK
Describe their project management style, including communication tools and timeliness.
Grace has personalized, planned out follow up and communication and has been consistent through the past 15 months.
What did you find most impressive or unique about this company?
They have a complete team to cover all bases from initial set up through the ongoing process of being a customer.
Are there any areas for improvement or something they could have done differently?
It just wasn't a good fit for us at the time.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Lead Generation for Bilingual Education Platform
Other Digital Marketing
$10,000 to $49,999
Apr. 2022 - Ongoing
4.5
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"They are very focused on delivering what they commit to."
Apr 13, 2022
Commercial Consultant, Maple Bear Global Schools
José Mafra
Education
Toronto, Ontario
51-200 Employees
Online Review
Callbox provides lead generation services for a bilingual education platform. The team handles the client's social media channels, SMS, calls, webinars, and more.
Callbox performance has been incredible. They are well-organized and focused on the project goals. Overall, the team has a transparent process and unique services.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I’m a commercial consultant for Maple Bear Global Schools.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox, and what were your goals?
We’ve partnered with Callbox to help us identify and generate new Leads for our USA Market.
SOLUTION
How did you select this vendor and what were the deciding factors?
The service was unbeatable. Attention to detail.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
The main goal was to identify new Leads to help fuel our expansion goals in the USA. The approach used was the full package call box offers: Social Media, SMS, Calls, Webinars etc
How many people from the vendor's team worked with you, and what were their positions?
I worked mainly with one Customer Relationship Agent.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
The project has just begun and the results aren’t available yet.
Describe their project management style, including communication tools and timeliness.
They have what it takes to get things going. Their process is clear and they are very focused on delivering what they commit to.
What did you find most impressive or unique about this company?
For a tech company, the service. There is a lot of players out there…callbox service stands out!
Are there any areas for improvement or something they could have done differently?
They did improve it right way…on our first call my contact did not have his camera on…after all the calls are with video which makes our interaction more personal.
RATINGS
4.5
Quality
5.0
Service & Deliverables
"Service and Value proposition are aligned!"
Schedule
5.0
On time / deadlines
"Very smooth"
Cost
4.0
Value / within estimates
"Price is high. But seems to be fair."
Willing to Refer
5.0
NPS
"Great service
Lead Generation for Supply Chain Software Firm
Content Marketing
$10,000 to $49,999
Apr. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Their workflow has been excellent."
Apr 12, 2022
CEO, b2wise
Steve Christensen
Verified
Other industries
Verona, New Jersey
11-50 Employees
Online Review
Verified
Callbox is helping a supply chain software company generate leads from targeted accounts and contacts for their sales pipeline.
Callbox's efforts have had a positive impact on the business. They lead an effective workflow, communicate consistently, and document progress. Overall, the client had nothing but good feedback regarding the team's performance.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Supply Chain Software company that I manage the United States market.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
Lead Generation
SOLUTION
How did you select this vendor and what were the deciding factors?
Their solution offering was more complete than any alternative I'd been able to find after hours of searching.
Describe the project in detail and walk through the stages of the project.
Callbox will help us generate leads from targeted accounts and contacts to create a sales pipeline and customers.
How many resources from the vendor's team worked with you, and what were their positions?
1 - Sales
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
Success to date is limited to the selection of Callbox as my strategic vendor.
How effective was the workflow between your team and theirs?
Their workflow has been excellent.
What did you find most impressive or unique about this company?
Communication, documentation and solution offering.
Are there any areas for improvement or something they could have done differently?
Not that I'm aware of
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Call Center Services for Recruitment Firm
Call Center Services
Less than $10,000
Jan. 2017 - Feb. 2022
5.0
Quality
4.5
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"We were impressed with the effort they put in."
Apr 7, 2022
President, Nearterm
Jim Higgins
Verified
Business services
Houston, Texas
11-50 Employees
Online Review
Verified
Looking to attain more leads, a recruitment firm hired Callbox for their call center services. The team was in charge of setting appointments.
Thanks to Callbox's services, the client managed to secure a number of business partnerships. By putting in the extra effort to accomplish each task, the team helped the client achieve their goals. Overall, the entire process was seamless.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Recruiting and Staffing president
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
Appointment setting
SOLUTION
How did you select this agency and what were the deciding factors?
The services they offered
Describe the project in detail and walk through the stages of the project.
They provide two top quilty callers. set two appointment a week
Describe the recruitment process in detail.
They call call a list of hospitals
RESULTS & FEEDBACK
Can you share any outcomes from the engagement that demonstrate progress or success?
we made a lot of deals because of there service
How effective was the workflow between your team and theirs?
We were impressed with the effort they put in.
What did you find most impressive or unique about this company?
The effort they put in.
Are there any areas for improvement or something they could have done differently?
None
RATINGS
5.0
Quality
4.5
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
BI & Analytics for IT Consultancy Company
BI & Big Data Consulting & SI
$50,000 to $199,999
Feb. 2022 - Ongoing
5.0
Quality
5.0
Schedule
4.0
Cost
2.0
Willing to Refer
5.0
"They are very professional."
Apr 7, 2022
Founder, CINCO ENTERPRISE
Anonymous
Verified
Advertising & marketing
Miami, Florida
1-10 Employees
Online Review
Verified
Callbox has partnered with an IT consultancy company in developing a social media analysis integrated with BI. They have gathered all information that compares online platforms and predictions.
The process is simple, but Callbox shows professionalism in accomplishing the tasks, earning positive remarks from the client.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
My Company is IT Consultant Services we offer high end and professional on the following
Staffing and outsourcing
Blockchains
Big Data
Migration Cloud
Cloud Computing
AI
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
not yet.
SOLUTION
How did you select this vendor and what were the deciding factors?
through research via online and analysis
Describe the project in detail and walk through the stages of the project.
we are developing analysis social media integrated with BI it's an big data to gather all data informations comparative who's doing better online and predictions.
How many resources from the vendor's team worked with you, and what were their positions?
My team it's just consulting and engineer.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
it's confidential.
How effective was the workflow between your team and theirs?
it's simple process and we are still startup business yet.
What did you find most impressive or unique about this company?
They are very professional.
Are there any areas for improvement or something they could have done differently?
Costs!
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.0
On time / deadlines
Cost
2.0
Value / within estimates
Willing to Refer
5.0
NPS
Lead Generation for SaaS Company
Content Marketing
$50,000 to $199,999
Feb. 2021 - Ongoing
4.0
Quality
4.0
Schedule
3.0
Cost
5.0
Willing to Refer
4.0
"If there are any unclear points, Callbox does not hesitate to ask me questions."
Sep 15, 2021
Marketing Director, SaaS Company
Anonymous
Verified
Other industries
Tokyo, Japan
1,001-5,000 Employees
Online Review
Verified
Callbox has been hired by a SaaS company to head their lead generation efforts. Currently, they are making a targeted list of prospects and developing marketing content.
Thanks to Callbox's ongoing support, the company has already generated a good number of leads. The team holds weekly meetings to provide updates, and they continue to approach the project in accordance with the client's strategy. However, they need to be faster in providing reports.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Company: Saas vendor My position: Marketing Director, APAC
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
For DB building, and generating leads
SOLUTION
How did you select this vendor and what were the deciding factors?
We gathered a couple of proposals. And Callbox was selected as they can provide broader range of services.
Describe the project in detail and walk through the stages of the project.
Callbox builds a target list of prospects. And then develop marketing content. Then conduct account-based multi-channel lead management. The project is ongoing.
How many resources from the vendor's team worked with you, and what were their positions?
Client success manager, Product manager, and Sales development rep.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
Callbox generated a good amount of leads.
How effective was the workflow between your team and theirs?
We are meeting on a weekly basis and monitoring the progress together.
What did you find most impressive or unique about this company?
If there are any unclear points, Callbox does not hesitate to ask me questions. I think they are working according to our strategy.
Are there any areas for improvement or something they could have done differently?
I would appreciate it if you could increase the frequency of updates and the speed at which you provide reports from webinar participants.
RATINGS
4.0
Quality
4.0
Service & Deliverables
"So far, so good"
Schedule
3.0
On time / deadlines
Cost
5.0
Value / within estimates
"I think the services are cost effective."
Willing to Refer
4.0
NPS
Showing 91-100 of
119 Reviews
Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.
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.
Get connected to see updates from Callbox like new case studies, latest reviews, their latest masterpieces in their portfolio, delivered straight to you.
