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Callbox

168 Reviews
4.4

About Callbox

Callbox is a premier global B2B Lead Generation Agency specializing in sales appointment setting and outsourced sales development. Leveraging two decades of expertise, they help enterprise leaders and scaling businesses across 60+ countries (including North America, APAC, and Europe) to grow revenue and expand markets. Their unique strategy combines Human + AI technology with a Multi-Touch Multi-Channel approach (email, calls, social) to deliver qualified leads and booked meetings. Core services include B2B Lead Generation, Account-based Marketing (ABM), Outsourced SDR Support, and Event Marketing for industries like Software, SaaS, Fintech, and Cybersecurity.

Industries

Healthcare
Finance & Accounting
Media
+1 more

Region

Philippines
United States

Languages

English

Addresses

Core Services

Lead Generation
Core Service
Email Marketing
Core Service
Content Marketing
Core Service
Marketing Strategy
Core Service

Other Services

Customer Support 1
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Inbound & Outbound Call Center

Service Details

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Company Reviews

Total Reviews
168

Last Rated 3/24/2026

Overall Ratings
4.44

Last Rated 3/24/2026

(89)
(61)
(10)
(0)
(7)
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AM

Afia McClenaghan

1 month ago

Google
1.0

Spam. Had a couple calls with them and then informed them our company would not be interested, but i receive constant emails from Vincent with a copy/paste email. This isn't professional and comes across as spam. Take a hint.

LG

Luke Genoyer

2 months ago

Google
3.0

Had two Exploratory Meetings scheduled with a Callbox representative, but they were no-shows (Jan 21 and Feb 3). I waited in the Zoom meeting room, but nobody showed up to let me in. Their service might be fine, too bad I never had the opportunity to even speak with somebody!

AL

Alexander Levit

1 year ago

Clutch
5.0

They were able to find the right persona, which was very difficult for us.

"They were able to find the right persona, which was very difficult for us." Callbox's lead generation efforts have resulted in a positive ROI for the client. The team has delivered leads at a larger scale than anticipated without compromising quality and has communicated effectively. Overall, the team's ability to find the right persona has been impressive. Callbox has generated leads for a 3D printing company. The team has been tasked with expanding the client's business in the American market.

A

Anonymous

1 year ago

Clutch
5.0

They are communicative, reliable, and transparent.

"They are communicative, reliable, and transparent." Callbox's efforts have helped the client generate healthy leads and effectively reach potential customers. The team is reliable, transparent, and communicative via virtual meetings, emails, and messaging apps. Their quick response times and flexible approach have impressed the client. Callbox provides lead generation services for a proptech company. The team is responsible for collecting additional information through the client's existing database.

SR

Samantha Rutter

1 year ago

Clutch
3.5

They worked collaboratively with us to understand our business.

"They worked collaboratively with us to understand our business." Callbox's efforts resulted in revenue growth and increased customer acquisition. The team was headed by a lead project manager who ensured the client was happy with the materials and messaging before executing their tasks. They worked collaboratively and responded in a timely, professional manner. A software company hired Callbox to reach out to their target audience within the US and discuss their products and USPs. This involved arranging meetings for the client's sales consultants.

A

Anonymous

1 year ago

Clutch
5.0

They're very prompt in responding to emails.

"They're very prompt in responding to emails." Callbox has been consistently delivering 1-2 contacts or leads per month and successfully booking appointments. The team is prompt, responsive, and flexible to the client's needs. Moreover, Callbox communicates exceptionally well, provides detailed reports, and takes ownership of their tasks. 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.

KI

Kenta Iima

1 year ago

Clutch
4.5

They adapted quickly to our requests and ensured our needs were addressed promptly.

"They adapted quickly to our requests and ensured our needs were addressed promptly." Callbox's efforts resulted in improved communication and engagement rates with targeted prospects. The team was flexible and accommodated changes in the project scope. Moreover, they were proactive, timely, and committed to providing high-quality service. Callbox provided lead generation services for a managed data platform. The team was responsible for creating a lead generation strategy, managing databases, and reporting.

AI

Andrew Inkpen

1 year ago

Clutch
5.0

They over-deliver and meet every area of our goals.

"They over-deliver and meet every area of our goals." Callbox has delivered high-quality leads, directly contributing to a more substantial sales pipeline. The team has improved the client's efficiency and conversion rates. Callbox has met deadlines without compromising quality. Their structured approach and commitment to collaboration are impressive. 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.

A

Anonymous

1 year ago

Clutch
4.5

Callbox's dedication to providing all-around marketing services and their positive, can-do attitude are impressive.

"Callbox's dedication to providing all-around marketing services and their positive, can-do attitude are impressive." Callbox has increased the client's NNL and SQL and drove registrations for the client's webinars, continuously working on social media to reach out on white space ICP. The team holds biweekly status meetings, addresses feedback, and remains dedicated to providing comprehensive marketing services. Callbox provides lead generation services for a cybersecurity solutions provider. The team contacts the client's white space ICP, sets up sales appointments, and drives webinar registrations.

VS

Varun Suneja

1 year ago

Clutch
4.5

Callbox is an organization that is professionally managed and process-oriented.

"Callbox is an organization that is professionally managed and process-oriented." Callbox has delivered 1,500 outbound calls, 36 MQLs, 10 SQLs, one sales opportunity, 23 new accounts, and 42 enriched contacts. The team has been competent and worked with resilience. The team has held weekly meetings and provided updates. The team's process-oriented approach has stood out. 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.

A

Anonymous

1 year ago

Clutch
5.0

The account manager was competent, and the team in general was good.

"The account manager was competent, and the team in general was good." Callbox helped the client generate sales-qualified leads and marketing-qualified leads. The team had an energetic workforce and was knowledgeable in their field. Further, they communicated well via email and virtual meetings. They were competent, responsive, and reliable. Callbox provided demand generation services for an IT consulting firm. The tasks included managing social media campaigns, event and webinar management, and SAP products and services.

A

Anonymous

1 year ago

Clutch
3.0

Callbox's customer engagement services were impressive.

"Callbox's customer engagement services were impressive." Callbox's work enabled the client to see MQL conversions to SQL, offering impressive customer engagement services. The team provided prompt responses through virtual meetings. Callbox was hired by an IT solutions provider for demand generation and lead appointment services. The team is also responsible for customer engagement.

A

Anonymous

1 year ago

Clutch
4.5

They were friendly and professional.

"They were friendly and professional." Callbox booked a number of appointments with sales-qualified leads that aligned with the client's goals, resulting in a successful engagement. They consistently delivered on time and were flexible when it came to changes and requests. Their professionalism and personable approach stood out. Callbox worked with an IT company to build their sales funnel. They led the client's database curation and enrichment efforts, created lead generation collateral, and handled appointment-setting.

A

Anonymous

1 year ago

Clutch
5.0

Callbox was very responsive and flexible in their approach.

"Callbox was very responsive and flexible in their approach." Callbox generated 1–2 appointments per week, adding pure value to the client's business development efforts. The team was responsive, flexible, and receptive to feedback. Their extensive resources of high-quality talent and strong industry skills were impressive. 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.

JM

Jaco Marais

1 year ago

Clutch
4.5

Callbox is trusted by top global companies to improve sales cycles, generate high-value leads, and support market growth.

"Callbox is trusted by top global companies to improve sales cycles, generate high-value leads, and support market growth." Callbox helped the client generate a steady flow of qualified leads and improve conversion rates. They increased customer relationships and engagement, resulting in time and cost efficiency. The team stood out for its comprehensive B2B lead generation services and human expertise. 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.

A

Anonymous

1 year ago

Clutch
4.0

CallBox had a professional workflow and good execution process.

"CallBox had a professional workflow and good execution process." Callbox successfully generated qualified and closed sales leads for the client. The team executed the workflow professionally and met expectations. Callbox communicated through in-person and virtual meetings, email, and messaging apps. Callbox provided lead generation services for a 3D modeling and visualization software company.

A

Anonymous

1 year ago

Clutch
4.5

We're impressed with their professionalism, detail-oriented approach, and timely delivery.

"We're impressed with their professionalism, detail-oriented approach, and timely delivery." The client is satisfied with Callbox's services. They seamlessly adapts to the client's workflow, allowing for a swift and smooth collaboration. Moreover, the team manifests their professionalism by being receptive to feedback and always delivering on time. Their attention to detail has stood out. Callbox provides lead generation services for an IT company. They've reached out to potential prospects based on the client's ICP. The team has also created a pipeline of qualified leads and appointments.

A

Anonymous

1 year ago

Clutch
4.5

Callbox's professionalism, efficiency, and commitment to results truly set them apart.

"Callbox's professionalism, efficiency, and commitment to results truly set them apart." Callbox's efforts resulted in a 30% ROI from the client's investment. The team consistently delivered high-quality leads and ensured timely replacements when needed. Callbox maintained a smooth and efficient process, and the client was impressed with their professionalism and commitment. Callbox provided lead generation services for a cybersecurity company. The team delivered BANT leads and drove RSVPs for the client's webinars and events.

LS

Lucassen Salim

1 year ago

Clutch
4.5

We're impressed with their good reporting and responsive teams.

"We're impressed with their good reporting and responsive teams." Callbox has generated qualified meetings for the client. The team is responsive, helpful, and timely in their work. They also provide good reports and demonstrate a great attitude toward work. Moreover, the team communicates through online meetings. Callbox provides demand generation services for a financial services firm. The team is responsible for finding databases, conducting lead generation campaigns, and setting appointments.

A

Anonymous

1 year ago

Clutch
5.0

The results are delivered on activity levels and client meetings.

"The results are delivered on activity levels and client meetings." Callbox has helped the client increase their top-of-funnel by 60%, appointment setting by 50%, and tripled open rates on emails and outbound call metrics. The team has impressive attention to detail and company culture. Callbox stays on track and has a weekly communication cadence with the client. Callbox provides business development, SEO, and event marketing services for a managed service provider (MSP). The team is responsible for email outreach, cold calling, and website optimization.

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