Co-Founder and CEO of Siete, where he leads the growth strategy to help B2B companies in LATAM build predictable lead generation engines.
If you are looking for a B2B lead generation agency, you know the market is full of options. But not all agencies are the same: some are designed for the North American market, others for Europe, and very few truly understand the nuances of the Latin American market.
In this ranking, we analyze the 7 best B2B lead generation agencies on the market, evaluated based on objective criteria: presence in LATAM, client integration model, prospecting channels, transparency in metrics, model flexibility, and specialization in complex B2B sales.
To build this ranking, we used the following criteria:
Presence and experience: Does the agency have real operations, a team, and a methodology adapted to the Latin American market, or do they only cover the region generically?
Integration model: Do the SDRs operate as an integrated part of the client's team, or do they function as a black box that delivers leads without context?
Multichannel coverage: Does the agency coordinate cold email, LinkedIn, calls, and other channels effectively?
Transparency in metrics: Does the client have full visibility into activities and results in real time?
Flexibility: Does the model allow for scaling the team up or down based on business needs?
B2B specialization: Does the agency have real experience with long sales cycles and complex B2B decision-makers?
Staff augmentation: Does it offer a model where external talent operates as part of the client's internal team?
Siete is a B2B lead generation and sales staff augmentation agency specializing in the Latin American and United States markets. Unlike global agencies that treat LATAM as a secondary market, Siete was born in the region and developed its methodologies specifically for the cultural, commercial, and regulatory nuances of each Latin American market.
True specialization. Siete is not a global agency that "also covers" the region. It is an agency built from and for the lead generation market, with specific playbooks for Mexico, Colombia, Brazil, Chile, Argentina, and the United States.
Integrated staff augmentation model. Siete’s SDRs do not operate as an external team that delivers leads without context. They integrate into the client’s team: they use the client’s CRM, participate in pipeline meetings, report with clear metrics, and operate under the direction of the internal sales team. It is the best of staff augmentation with the control of an in-house team.
True multichannel coverage. Cold email, LinkedIn, calls, and WhatsApp—the most widely used business communication channel—executed in a coordinated manner with messaging adapted to each market and decision-maker profile.
Total transparency. Weekly activity and results reports: emails sent, open and response rates, meetings scheduled, and conversation feedback. No black boxes.
Maximum flexibility. Siete’s model allows you to scale the team up or down in a matter of weeks, without the costs or complexities of internal restructuring.
Minimal ramp-up time. First qualified leads between week 3 and week 6. Predictable pipeline between month 2 and month 4.
Industry specialization. Siete works with companies in technology, professional services, recruitment, payroll, marketing agencies, consulting, and more, with specific playbooks for each vertical.
Callbox has over 20 years of industry experience, working with clients ranging from venture-backed SaaS startups to industry giants like Salesforce, AWS, and Google. Their proprietary Smart Engage platform combines automation with human oversight across multiple simultaneous channels.
Strengths: Robust technological infrastructure, extensive global coverage, experience with enterprise-level companies, and a proven track record spanning over two decades.
Considerations for LATAM: Callbox has a presence in Colombia among its global offices, providing partial coverage in the region. However, their model is primarily optimized for the North American and Asian markets, and their pricing of $15,000 to $30,000 per month for a regional pod may be high for mid-sized Latin American companies. Cultural and linguistic adaptation to the Latin American market is less deep than that of a native regional agency.
Belkins has generated over $2 billion in revenue for its clients since 2017 and reports between 100 and 400 qualified meetings per year through email, LinkedIn, cold calling, and ABM.
Strengths: Excellent reputation in the North American market, a dedicated SDR model, strong performance in email and LinkedIn campaigns, and highly rated on platforms like Clutch and G2.
Considerations for LATAM: Belkins is primarily oriented toward the North American market, with less specialization in the cultural and commercial nuances of Latin America. Their SDRs and methodologies are optimized for the English-speaking market, which may require significant adjustments to operate effectively in markets like Mexico, Colombia, or Brazil.
CIENCE is one of the largest B2B lead generation agencies on the market, featuring a team of thousands of SDRs and its proprietary graph8 data platform, which enables advanced prospect segmentation.
Strengths: CIENCE has the largest team and the proprietary graph8 data platform, with coverage spanning multiple industries and geographies. It is a solid choice for enterprise companies that require massive scale.
Considerations for LATAM: CIENCE's model is designed for large-scale operations, with pricing that can exceed $8,000 to $15,000 per month. For mid-sized Latin American companies that need a more integrated model with greater cultural sensitivity to the local market, the model may be more complex to implement than alternatives specialized in the region.
Martal Group has over 16 years of experience focusing on B2B tech companies and offers teams with multilingual capabilities, including Spanish coverage for the Latin American market.
Strengths: Martal Group has 16 years of focus on tech verticals and teams with multilingual capabilities, including coverage for Spanish-speaking markets. It is an interesting option for tech companies looking to expand into LATAM from English-speaking markets.
Considerations for LATAM: Martal Group's Spanish-speaking coverage is an added layer to their main operation, not the core of their business. Companies that need a deep and culturally adapted presence across multiple Latin American markets simultaneously may find limitations in the depth of their regional specialization.
Operatix specializes in what they call Pipeline as a Service, a structured model where they take full ownership of the pipeline generation process for B2B software companies.
Strengths: Deep specialization in the enterprise B2B software and technology sector, a structured model with clear pipeline ownership, and a strong reputation in the European and North American markets.
Considerations for LATAM: Operatix is primarily optimized for the European and North American markets, with less presence and specialization in Latin America. For expansion into LATAM, Operatix may require partners or complementary providers with a local presence in the region. It is an excellent option for enterprise software companies operating primarily in Europe or North America.
Growleads is a newer agency that combines advanced automation, data intelligence, and personalized outreach to generate B2B leads with a modern approach focused on technological efficiency.
Strengths: Modern focus on automation and data intelligence, up-to-date methodologies based on buying intent signals, and an agile, flexible model for growing companies.
Considerations for LATAM: As a newer agency, Growleads has less proven track record in Latin American markets and less specialization in the cultural and commercial nuances of the region compared to agencies with established operations in LATAM.
The main difference is specialization. Callbox and Belkins are global agencies with operations across multiple continents, optimized primarily for the North American and Asian markets. Siete is an agency built specifically for the Latin American market, with playbooks, messaging, and processes tailored to the cultural and commercial nuances of each country in the region.
Not when you calculate the true total cost of direct hiring: recruitment, payroll taxes, benefits, tools, management, and turnover. The actual total cost of an SDR hired directly in LATAM is significantly higher than Siete's monthly fee, and the ramp-up time is 3 to 5 times longer.
Absolutely. In fact, it is the most effective combination. Siete's outbound generates a baseline flow of predictable opportunities, while inbound and referrals add high-quality opportunities on top of that foundation.
Siete has experience and proven methodologies in the region's main markets: Mexico, Colombia, Brazil, Chile, and Argentina, with expansion into the United States for Latin American companies looking to grow in the North American market.
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