Best Sales Prospecting Companies for United States 2025

Creatop is a B2B cold email and outbound marketing agency based in Sheridan, Wyoming. They help businesses scale through automated, AI‑enhanced outreach—from target research to appointment setting. Perfect for clients seeking a reliable, data‑backed system to fill pipelines and book sales calls without hiring internally.

GrowthEra is a US‑based outsourced SDR and B2B lead generation agency. They provide custom sales teams, CRM optimisation, and strategic consulting to help tech companies and enterprises build scalable pipelines. Ideal for businesses seeking a plug‑and‑play sales development solution that drives qualified meetings without internal hiring.

Lead Zeppelin is a New York-based email and LinkedIn lead generation agency that builds multichannel outbound systems for B2B companies. The use of precision targeting, real‑time CRM integration, and dedicated account management for each client. With that, they help sales teams generate qualified leads and book meetings. Ideal for businesses looking for scalable, automated prospecting with measurable results.

Lumos builds scalable outbound systems for B2B teams—anchored on LinkedIn and expanded with cold email, appointment setting to create a qualified pipeline without the cost and complexity of in-house SDRs.

WebbitMail is a done-for-you cold email agency that guarantees Qualified/Held sales meetings for SMBs, agents, and contractors. Flat-fee pricing, no vague leads—just predictable, scalable meetings that fill your calendar at half the cost of traditional agencies.

IntentSignal builds custom outbound systems that others can't. Our in-house GTM engineers create custom outbound infrastructure to help you generate quality leads. If cold email hasn't worked for you yet, it's not impossible, especially when you work with IntentSignal.

LevelUp Leads is a sales development and appointment setting agency. Our team becomes your sales development engine, providing the people, data, technology, and campaign execution to give you more selling opportunities. We manage everything from data sourcing to copywriting to campaign management, creating more pipeline and revenue for your business.

Phi Consulting is a GTM and technological consulting agency based in the US. It has 10+ years of experience in consulting and has worked with many startups. Its consulting is based on providing niche-specific services. Apart from startups, they also work with SMEs with their services. They have 10+ business partners for whom they have generated more than $200M+ ARR.

ExpertCallers is a call centre and lead generation service provider agency headquartered in the US. Its call centre services are available worldwide, and its offices are located on three continents. Its services include quality monitoring, CCTV monitoring, email and chat support, content moderation, appointment booking, and more. It offers both inbound and outbound call centre outsourcing services.

Ciente’s lead generation services make it easier to connect with the right people, improving your conversion rates and helping you hit your marketing goals. Instead of casting a wide net and hoping for the best, Ciente uses a structured approach to find and engage the audience that truly matters to your business.

Salesroads is a lead generation, appointment booking, and SDR outsourcing service provider. With their experience of 16+ years and an average of 6 years of experience in their SDR team, they easily become the trustworthy option for many. They work with industrial companies. Their solutions include outbound cold email, cold calling, list building, appointment booking, account-based marketing, and more.

Revboss is a lead generation company that works mainly with small—and mid-sized B2B SaaS and business service providers. Their tool effectively prepares market-fit, personalized, AI-empowered communications to increase responses. If your requirements are growing without increasing in-house talent and having personalized communication, Revboss can be your go-to tool.

Hello, Outbound is a prospecting, strategizing, and copywriting service providing business. A group of engineers runs the company, and copywriters help the business with optimized, well-tested, intriguing content that is well-strategized.

Hiplead, a prospecting service provider, offers a complete sales automation solution for B2B SaaS companies. They preferably work with startups because of their expertise in that category. They have worked with more than 250 high-growth start-ups and currently offer prospecting services for more than 30 industries.

Creatop is a B2B cold email and outbound marketing agency based in Sheridan, Wyoming. They help businesses scale through automated, AI‑enhanced outreach—from target research to appointment setting. Perfect for clients seeking a reliable, data‑backed system to fill pipelines and book sales calls without hiring internally.

GrowthEra is a US‑based outsourced SDR and B2B lead generation agency. They provide custom sales teams, CRM optimisation, and strategic consulting to help tech companies and enterprises build scalable pipelines. Ideal for businesses seeking a plug‑and‑play sales development solution that drives qualified meetings without internal hiring.

Lead Zeppelin is a New York-based email and LinkedIn lead generation agency that builds multichannel outbound systems for B2B companies. The use of precision targeting, real‑time CRM integration, and dedicated account management for each client. With that, they help sales teams generate qualified leads and book meetings. Ideal for businesses looking for scalable, automated prospecting with measurable results.

Lumos builds scalable outbound systems for B2B teams—anchored on LinkedIn and expanded with cold email, appointment setting to create a qualified pipeline without the cost and complexity of in-house SDRs.

WebbitMail is a done-for-you cold email agency that guarantees Qualified/Held sales meetings for SMBs, agents, and contractors. Flat-fee pricing, no vague leads—just predictable, scalable meetings that fill your calendar at half the cost of traditional agencies.

IntentSignal builds custom outbound systems that others can't. Our in-house GTM engineers create custom outbound infrastructure to help you generate quality leads. If cold email hasn't worked for you yet, it's not impossible, especially when you work with IntentSignal.

LevelUp Leads is a sales development and appointment setting agency. Our team becomes your sales development engine, providing the people, data, technology, and campaign execution to give you more selling opportunities. We manage everything from data sourcing to copywriting to campaign management, creating more pipeline and revenue for your business.

Phi Consulting is a GTM and technological consulting agency based in the US. It has 10+ years of experience in consulting and has worked with many startups. Its consulting is based on providing niche-specific services. Apart from startups, they also work with SMEs with their services. They have 10+ business partners for whom they have generated more than $200M+ ARR.

ExpertCallers is a call centre and lead generation service provider agency headquartered in the US. Its call centre services are available worldwide, and its offices are located on three continents. Its services include quality monitoring, CCTV monitoring, email and chat support, content moderation, appointment booking, and more. It offers both inbound and outbound call centre outsourcing services.

Ciente’s lead generation services make it easier to connect with the right people, improving your conversion rates and helping you hit your marketing goals. Instead of casting a wide net and hoping for the best, Ciente uses a structured approach to find and engage the audience that truly matters to your business.

Salesroads is a lead generation, appointment booking, and SDR outsourcing service provider. With their experience of 16+ years and an average of 6 years of experience in their SDR team, they easily become the trustworthy option for many. They work with industrial companies. Their solutions include outbound cold email, cold calling, list building, appointment booking, account-based marketing, and more.

Revboss is a lead generation company that works mainly with small—and mid-sized B2B SaaS and business service providers. Their tool effectively prepares market-fit, personalized, AI-empowered communications to increase responses. If your requirements are growing without increasing in-house talent and having personalized communication, Revboss can be your go-to tool.

Hello, Outbound is a prospecting, strategizing, and copywriting service providing business. A group of engineers runs the company, and copywriters help the business with optimized, well-tested, intriguing content that is well-strategized.

Hiplead, a prospecting service provider, offers a complete sales automation solution for B2B SaaS companies. They preferably work with startups because of their expertise in that category. They have worked with more than 250 high-growth start-ups and currently offer prospecting services for more than 30 industries.