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.
Sales OutsourcingCall Center ServicesB2B Lead GenerationB2B 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 and appointment setting services, with clients spending between $12,000 to over $80,000 annually. Clients appreciate the value for cost, reporting, and responsiveness, often seeing a high return on investment through increased qualified leads and appointments.
Some clients experienced initial challenges with targeting and messaging, requiring adjustments to better align with desired outcomes. However, Callbox's willingness to pivot and refine strategies has been noted as a positive response to these issues.
Impressive Communication and Reporting
Clients value Callbox's clear communication and detailed reporting, which provide transparency and help in measuring campaign success. Regular meetings and updates keep clients informed of progress and areas for improvement.
Strong Project Management Skills
Clients commend Callbox for their structured and organized project management. They provide regular updates and are responsive to feedback, ensuring that campaigns are aligned with client expectations and objectives.
Responsive and Professional Team
Callbox's team is noted for their professionalism and responsiveness. Clients appreciate their ability to quickly address issues and provide solutions, contributing to a seamless collaboration experience.
Effective Use of Technology and Tools
Clients appreciate Callbox's use of technology and tools, such as HubSpot, to streamline processes and enhance lead management. This integration contributes to efficient workflow and data management.
High Client Satisfaction and Long-term Partnerships
Many clients have continued their partnerships with Callbox due to their consistent delivery of results and professional service. Their ability to adapt to client needs and provide personalized solutions contributes to long-term client satisfaction.
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
Telemarketing Lead Generation for Computer Software Company
Call Center Services
$10,000 to $49,999
Jan. - Aug. 2021
4.0
Quality
4.0
Schedule
4.5
Cost
2.5
Willing to Refer
4.0
"They were very organized and professional."
May 14, 2021
Sales Operations Manager, Computer Software Company
Please describe your company and your position there.
Sales Operations Manager at a Canadian software company that specializes in animation production and storyboarding software
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox, and what were your goals??
Lead conversion in the APAC Territory
SOLUTION
How did you select this vendor and what were the deciding factors?
Reviewed multiple vendors, selected the Partner that best matched our existing processes.
Describe the project in detail and walk through their service package, including any calling tools used.
They reached out to a list they created, in specified markets and booked appointments for our Agents
Who did you work with and what was the feedback process like?
Edelyn and Isabel. Weekly feedback sessions
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the service?
They managed to set up 3-9 SDR Qualified appointments weekly.
Describe their project management style, including communication tools and timeliness.
Outside of weekly scheduled calls, Edelyn and her team were always very responsive via email or video calls.
What did you find most impressive or unique about this company?
They were very organized and professional. Their feedback reports were also informative.
Are there any areas for improvement or something they could have done differently?
Hire multilingual agents to be able to serve to non-English speaking markets.
RATINGS
4.0
Quality
4.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
2.5
Value / within estimates
Willing to Refer
4.0
NPS
Demand Generation Services for Information Services Company
Call Center Services
Confidential
Jan. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"Overall the experience is quite good with them."
May 6, 2021
Regional Marketing Manager, Information Services Company
Anonymous
Verified
Other industries
Singapore
11-50 Employees
Online Review
Verified
Callbox provides ongoing demand generation services for an information services company. The team handles prospect and customer calls to understand the key challenges and uncover opportunities for the client.
For the past 10 years, Callbox's efforts drive awareness, promote marketing campaigns, and generate leads meeting the client's expectations. The team constantly communicates through weekly team calls. They are proactive and flexible.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm from the marketing department
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire , and what were your goals??
I have been working with Callbox for more than 10years now. We work with them to help us drive demand generation and support my marketing programs.
SOLUTION
How did you select this vendor and what were the deciding factors?
We have evaluated different vendors that are available in the marketing. When we select a vendor we look at their capabilities, skills, and cost. Callbox became top choice after these considerations.
Describe the project in detail and walk through their service package, including any calling tools used.
They call prospects and customers to understand their key challenges and uncover opportunities for us.
Who did you work with and what was the feedback process like?
I usually work with Mitos APAC Director - Client Services and Sales and her team they look after my campaigns. The team is very professional and ensures the success of my campaigns.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the service?
The team helps drive more awareness, generate leads, and promote marketing campaigns.
Describe their project management style, including communication tools and timeliness.
We do a weekly call with the team, we also constantly communicate on emails often
What did you find most impressive or unique about this company?
They are very proactive, if the campaign is not delivering the result we are trying to achieve they will recommend another alternative approach we can expolore.
Are there any areas for improvement or something they could have done differently?
Overall the experience is quite good with them.
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 IT Solutions Provider
Cloud Consulting & SI
$10,000 to $49,999
Jan. - Apr. 2021
4.0
Quality
4.5
Schedule
5.0
Cost
3.5
Willing to Refer
4.0
"They were thorough and professional throughout the entire engagement."
May 4, 2021
Director of Sales & Marketing, IT Solutions Provider
Anudeep Parashar
Verified
Other industries
Singapore
11-50 Employees
Online Review
Verified
Callbox provided lead generation services for an IT solutions provider. They handled Google Ads marketing for the project.
Callbox's service led to 63 leads, 43 of which were MQL. The client commended their efficient but thorough project management.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am heading the sales and marketing outreach for an integrated platform for e-commerce in the APAC region.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
Primarily for lead generation in the APAC region.
SOLUTION
How did you select this vendor and what were the deciding factors?
Evaluated the proposals and strengths of multiple vendors before shortlisting callbox.
Describe the project in detail and walk through the stages of the project.
Product orientation and training
Messaging and branding
Campaign efforts
LinkedIn outreach
Google Ad-words marketing
Weekly updates
Scheduling of appointments.
How many resources from the vendor's team worked with you, and what were their positions?
One CSM
One PM
Two writers
One main agent
One backup agent.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
The outreach led to a total of 63 leads of which 43 were MQL's and remaining were appointments.
How effective was the workflow between your team and theirs?
Very effective and efficient.
What did you find most impressive or unique about this company?
They were thorough and professional throughout the entire engagement.
Are there any areas for improvement or something they could have done differently?
Probably have more flexi pricing options.
RATINGS
4.0
Quality
4.5
Service & Deliverables
"As explained above, very thorough and professional throughout the entire engagement."
Schedule
5.0
On time / deadlines
Cost
3.5
Value / within estimates
Willing to Refer
4.0
NPS
Lead Generation for Portable Air Purifier Company
Call Center Services
Less than $10,000
Feb. 2021 - Ongoing
4.0
Quality
3.5
Schedule
4.0
Cost
4.0
Willing to Refer
4.0
"They are doing what we expect them to do."
Mar 11, 2021
Director of B2B Sales, Alen Inc
Anonymous
Verified
Other industries
Austin, Texas
51-200 Employees
Online Review
Verified
A portable purifier and filter company hired Callbox to head their lead generation efforts in the education, corporate, and healthcare verticals.
Callbox is adaptable, proactive, and enthusiastic. The team's tools, communication, and feedback are very helpful for the internal team.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Alen is a portable air purifier and filter company looking to expand our business sales division.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Callbox?
We hired Callbox to help us with lead generation in the education, corporate and healthcare verticals.
What were your goals for this project?
Obtain leads and contacts to sell more purifiers
SOLUTION
How did you select Callbox?
Our CRO, Tony Tamburrano had worked with Callbox previously at a different company.
Describe the project in detail.
Callbox sources leads through traditional telephone and email outreach as well as social media. They provide weekly updates on MQLs and Appointment setting.
What was the team composition?
Callbox has provided Alen with 1 lead and 2 people on outreach
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
It is too early to determine success through metrics but Cllbox has been adaptable, proactive and enthusiastic thus far.
How effective was the workflow between your team and theirs?
Their tools, frequency of communication and feedback has been very helpful to the Alen team.
What did you find most impressive about this company?
Their tools, frequency of communication and feedback has been very helpful to the Alen team.
Are there any areas for improvement?
As long as Callbox continues to focus on quality of the leads, they are doing what we expect them to do.
RATINGS
4.0
Quality
3.5
Service & Deliverables
Schedule
4.0
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
4.0
NPS
Showing 101-110 of
125 Reviews
Premier Verified means Clutch independently confirmed Callbox is a legally registered business, financially sound (Creditsafe: Low Risk), and backed by 118 verified client reviews averaging 4.6 stars.
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