The Best Cold Outreach Services In USA [2026]

Inbound leads may be the dream, but they’re rarely enough to sustain predictable growth. That’s why cold outreach remains a key part of the sales mix for B2B companies across the United States.

It’s direct and, when done right, still one of the fastest ways to reach decision-makers.

Yet the game has changed. Email filters are tougher, and prospects have grown immune to generic messages. Standing out now takes precision: high-quality data, domain warm-up, advanced personalization, and strict compliance with U.S. regulations like CAN-SPAM and TCPA.

This is where many teams hit a fork in the road.

Should you hire one of the best cold outreach services in the USA to handle everything for you? Or should you build an in-house process using tools like Woodpecker to stay in control?

In the following sections, we’ll break down both paths – outsourced agencies and in-house setups – so you can decide which fits your goals and growth stage.

Why many companies outsource cold outreach

Cold outreach looks simple at first. But at scale, it’s a demanding system that needs good data, technical setup, and consistent follow-up. Many U.S. businesses, especially small and mid-sized B2B teams, decide to outsource this part instead of building it in-house.

Outreach agencies handle the heavy lifting. They:

• find prospects,
• write personalized messages,
• warm up domains,
• and run multichannel campaigns across email, LinkedIn, and sometimes calls.

This approach helps companies move faster without hiring full-time sales development reps (SDRs).

Outsourcing also brings specialized expertise. Top U.S. agencies spend years perfecting deliverability and compliance. They monitor sender reputation, A/B test messaging, and use advanced tools that most smaller teams can’t justify purchasing. For a growing business, that’s often a shortcut to predictable results.

Still, outsourcing has trade-offs. You’ll have less control over tone and brand voice, and results can vary depending on how closely the agency understands your target market. It’s best suited for teams that value speed, scale, and predictable output more than day-to-day control.

Top cold outreach campaigns service providers in the USA

When you decide to outsource, you’ll find dozens of agencies promising fast results.

The best ones combine data accuracy, personalized messages, and a clear process for generating leads.

Below are some of the top cold email agencies and lead generation services in the USA.

1. Belkins

Belkins stands out as one of the most established cold email agencies in the USA. Founded in 2017, it has built a strong reputation for helping B2B companies generate leads, book qualified sales meetings, and strengthen their sales pipeline through a mix of data-driven strategy and personalized communication.

What they do best

Belkins isn’t limited to email. Their cold outreach campaigns span multiple channels (cold calling, LinkedIn outreach, voicemails, SMS, and even social media outreach). Their team of sales professionals runs these touchpoints in sync to reach potential customers at the right moment and in the right place. The result? A steady stream of warm leads that convert faster in the sales funnel.

Services and industries

The agency serves clients across more than 50 industries, from SaaS and healthcare to construction and finance. Their key services include:

• Targeted campaigns that “break through the noise” with personalized messages and carefully tested subject lines.
• Direct phone calls that aim to boost booked appointments by 30%.
• Expanding reach through personalized invites and follow-ups on LinkedIn.
• Verified lists of target prospects that match each client’s ideal customer profile.
• Helping companies stay compliant with legal guidelines while optimizing performance.

Performance and process

Belkins claims to deliver between 100 and 400 qualified appointments per year per client, often at a quarter of the cost of hiring an in-house sales team. Their campaigns typically start generating results within the first month, supported by weekly calls, ongoing optimization, and transparent reporting.

Their process covers every stage of the sales cycle:

1. Activation: engaging prospects through tailored outreach.
2. Conversion: turning responses into qualified hot leads.
3. Deal closure: handing over sales-ready prospects to client teams to finalize closing deals.

Why companies choose them

Many U.S. businesses struggling with inconsistent lead quality or underperforming marketing strategies turn to Belkins for structure and predictability. The agency emphasizes tracking key metrics, fast implementation, and clear ownership of results. Their 4.9/5 score on Clutch and positive client feedback on G2 reflect a strong record across small, mid-sized, and enterprise clients.

Drawbacks

Because Belkins handles full-cycle outreach, clients may have limited control over tone or specific sales pitch details. It’s also more expensive than using a single cold outreach tool internally. Still, for companies prioritizing volume and measurable ROI, Belkins remains a top pick among the best cold outreach services in the USA.

2. SalesHive

SalesHive is a B2B lead generation agency known for its strong focus on transparency, U.S.-based talent, and proprietary AI technology. Founded in 2016, it has grown into one of the most trusted cold outreach services in the USA, with more than 115,000 booked sales meetings for over 250 clients. Its mission is simple: make B2B sales development both scalable and affordable for growing companies.

What they do best

SalesHive runs every major cold outreach channel (cold calling, email outreach, LinkedIn outreach, and remote SDR management). Their AI-driven platform helps sales teams manage contacts, track the sales pipeline, and analyze performance in real time. Unlike traditional lead generation agencies, they give clients full visibility into data and performance metrics, so nothing feels like a black box.

Their cold calling process is a major strength. All sales professionals are U.S.-based, trained to navigate gatekeepers and reach decision-makers through strategic phone calls. They also manage cold email campaigns through an advanced customization API that personalizes every message and subject line based on the recipient’s industry, pain points, and more.

Services and platform features

• U.S.-based SDRs who schedule calls with hot leads ready to talk.
• AI-personalized sequences that cut through filters and drive high engagement.
• Dedicated reps who nurture warm leads and maintain consistent follow ups.
• Handling scheduling to free your sales teams for closing deals.
• A built-in CRM that tracks interactions, segments the target audience, and automates outreach across multiple social media platforms.

Why companies choose them

Many clients pick SalesHive for its flexibility. No long-term contracts, transparent pricing, and zero-risk onboarding. You can test campaigns month to month, adjusting your outreach strategy as your sales cycle evolves. The platform also includes built-in tools for purchasing verified contacts, managing marketing strategies, and tracking key metrics across all active campaigns.

SalesHive’s leadership takes pride in its U.S.-based team. Every rep represents your business’s reputation with local fluency, cultural awareness, and high communication standards – something rare in the lead generation service market. This approach makes the agency a strong fit for companies that value brand integrity and close collaboration.

Performance and results

With over 15,000 calls made in a 90-day window and hundreds of qualified leads generated monthly, SalesHive delivers measurable progress quickly. Their platform dashboard gives clients access to detailed reports, open rates, sales funnel performance, and pipeline forecasts. All to help them refine social media outreach and direct engagement strategies over time.

Drawbacks

SalesHive’s fully U.S.-based model makes it slightly more expensive than offshore agencies. It also suits B2B companies with an established sales process rather than those just starting out. But for organizations that want transparent communication and high-quality sales-ready leads, SalesHive remains one of the best cold outreach services in the USA.

3. Cleverly

Cleverly is one of the most recognized LinkedIn lead generation agencies in the USA, helping B2B companies turn LinkedIn into a predictable sales pipeline. Using data from thousands of cold outreach campaigns, the team crafts personalized messages that reach the right target audience and generate a steady stream of warm leads and sales meetings.

What they do best

Cleverly can run fully managed LinkedIn outreach campaigns supported by cold email outreach and optional cold calling lead generation. Their done-for-you model handles every step, from finding target prospects to writing copy and managing follow ups. This hands-off approach helps sales teams focus on core business activities like closing deals.

Their expertise goes beyond prospecting. Cleverly also handles LinkedIn content & ghostwriting, so your social media posts build authority and attract potential customers. Thanks to combining outreach and content, they keep your sales funnel full of qualified leads while nurturing long-term trust with decision-makers.

Services and pricing

• LinkedIn lead generation & appointment setting: from $397/mo to $997/mo depending on tier (Silver, Gold, Platinum). Includes 500 monthly prospects, A/B testing, ongoing strategy calls, CRM integration, and campaign optimization.
• Cold email lead generation: adds an email layer to reach prospects outside LinkedIn.
• Cold calling lead generation: optional phone-based outreach to reach hot leads faster.
• LinkedIn content service & profile optimization: builds visibility through tailored posts, profile improvements, and social media outreach.
• White-label lead generation: for agencies managing multiple clients.

Performance and results

Cleverly’s track record is backed by clear numbers: 224,700 leads generated, $51.2 million in client revenue, and over $312 million in client pipeline. Case studies from sectors like SaaS, insurance, and consulting show consistent outcomes:

• SaaS: 41 meetings in three months with a 33% reply rate.
• Insurance: 307 meetings in three months through multi-profile campaigns.
• Software development: $1.5 million pipeline created in six months.

Why companies choose them

Many clients appreciate Cleverly’s focus on measurable growth and proactive communication. Dedicated account managers, weekly calls, and clear dashboards make it simple to track key metrics like reply rates and ROI. Their team also provides client feedback sessions to adjust messaging and targeting based on real data.

Drawbacks

Cleverly’s system is primarily LinkedIn-first, so it may not suit businesses relying heavily on phone calls or multi-step sales processes outside that platform. Standard plans limit monthly outreach volume, and compliance awareness is essential to meet legal guidelines and protect your business’s reputation.

Still, for B2B companies selling on LinkedIn, especially in tech or services, Cleverly remains one of the best cold outreach services in the USA.

4. LevelUp Leads

LevelUp Leads is a California-based outsourced SDR agency that helps B2B companies grow faster through scalable lead generation and appointment setting. Known for its flexible model and measurable outcomes, the agency has completed over 850 projects, served nearly 600 clients, and claims an 11:1 ROI across its cold outreach campaigns.

What they do best

LevelUp Leads focuses on combining data-driven strategy with experienced sales professionals. Their team manages every part of the sales process, from building lists and running cold email campaigns to handling cold calling and LinkedIn outreach. The agency’s goal is to fill your sales pipeline with qualified prospects ready to talk, reducing your team’s workload while maintaining brand quality.

LevelUp Leads is built for flexibility. Companies can choose between fractional SDRs (shared reps for lower volume) or full-service SDRs (dedicated reps for larger campaigns).

Their multi-channel strategy, spanning phone calls, email, and social media platforms, creates consistent initial contact with potential customers across multiple touchpoints.

Services and solutions

• Intent-driven scripts aimed at decision-makers to drive faster conversions and sales meetings.
• Outbound campaigns optimized for personalized messages, high deliverability, and consistent follow ups.
• LinkedIn lead generation for building brand awareness through connection requests, social media outreach, and targeted engagement.
• Go-to-market strategy helping new businesses define their target audience and accelerate early lead generation efforts.
• List building & SEO services with custom prospect databases and website optimization to generate organic website traffic and warm leads.

Performance and results

LevelUp Leads highlights impressive client metrics:

• 308% KPI attainment across campaigns.
• High-value meetings with decision-makers that convert faster in the sales funnel.
• Documented results from clients achieving shorter sales cycles and higher response rates.
  Their reporting dashboard gives clients access to campaign metrics, tracking key metrics like booked meetings, call recordings, and conversion rates. This transparency helps teams make data-driven decisions while keeping core business activities on track.

Why companies choose them

LevelUp Leads offers the same results as a fully staffed in-house team but without the hiring and training. It’s ideal for businesses struggling to scale their cold outreach efforts. Their global time zone coverage, native English-speaking SDRs, and weekly calls with account managers make collaboration simple.

The agency’s leadership is directly involved in strategy, while specialized roles support execution. This structure gives clients the benefits of a large marketing agency with the flexibility of a boutique team.

Drawbacks

While LevelUp Leads delivers high-touch service, costs can rise for full-service SDR setups, especially if you need both cold email outreach and cold calling at scale. Their focus on managed services also means less direct control over day-to-day messaging.

Still, their track record and strong reviews (5.0 on Clutch and 4.9 on G2) make them one of the best cold outreach services in the USA for companies that are into predictable growth through outsourced lead generation services.

5. Pearl Lemon Leads USA

Pearl Lemon Leads USA is a New York–based B2B lead generation agency that helps companies expand their sales pipeline through fully managed inbound and outbound outreach. The agency’s promise is clear: “20 calls in 30 days”. Its process blends human expertise with data-driven precision across email, phone, and social media outreach.

What they do best

Pearl Lemon Leads combines cold calling, cold emailing, and LinkedIn lead generation with content marketing and appointment setting to help clients generate leads that convert faster. Their team tailors every campaign to the client’s target audience, focusing on measurable growth and ROI. This multi-channel approach makes it easier for businesses to reach potential customers across platforms without managing separate systems.

Unlike many cold email agencies, Pearl Lemon Leads integrates inbound and outbound tactics. Their inbound team attracts warm leads through value-based content, while their outbound team uses personalized messages to make initial contact and schedule qualified sales meetings. Combined, these channels shorten the sales cycle and deliver a more predictable flow of opportunities.

Services and solutions

• Proactive outreach via cold email campaigns, cold calling, and social media platforms.
• SEO, content, and email marketing that drive consistent website traffic.
• Segmenting prospects by intent, managing follow ups, and converting them into hot leads.
• Handling early-stage conversations so your sales teams can focus on closing deals.
• Optimized LinkedIn profiles, advanced search filters, and personalized outreach to key decision-makers.
• Custom campaigns with attention to subject line quality, compliance, and deliverability.

Performance and process

Pearl Lemon Leads emphasizes transparency and accountability. Their campaigns are guided by real-time analytics to track key metrics like open rates, conversion rates, and ROI. Clients receive regular reports and weekly calls to review progress. The agency’s sales professionals, spanning cities like New York, Los Angeles, and Dallas, deliver both scale and local expertise.

The process begins with an in-depth consultation to define the target audience and marketing strategies, followed by strategy design, execution, and continuous optimization. Every campaign is adjusted based on client feedback and performance data.

Why companies choose them

Pearl Lemon Leads appeals to businesses that want flexible engagement and measurable outcomes. Their combination of cold outreach campaigns and inbound visibility helps clients build credibility while keeping the sales funnel active. The agency’s ratings highlight consistent satisfaction with campaign results and overall service quality.

Drawbacks

Pearl Lemon Leads’ campaigns require close collaboration for best results. Companies with niche or highly technical products may need more customization in messaging or ICP development. Pricing transparency can also vary depending on scope and channel mix.

Still, for companies that want a hybrid inbound–outbound strategy with U.S.-based expertise and hands-on support, Pearl Lemon Leads USA ranks among the best cold outreach services in the USA. Its balance of cold email outreach, phone calls, and LinkedIn campaigns makes it a strong fit for B2B teams seeking consistency, speed, and real sales conversations—not just contact lists.

Doing cold outreach in-house: tools

Some companies prefer to manage outreach internally instead of hiring an agency. Building an in-house system gives you full control over tone, timing, and messaging.

But it’s also time consuming, and success depends on choosing the right analytics tools and continuously testing what works.

Running outreach internally means developing a full process: building prospect lists, sending follow up emails, analyzing lead conversion rates, and adjusting campaigns based on results.

To make this work, your sales teams need to use reliable software that automates routine tasks while keeping messages personal and authentic.

Top tools for in-house cold outreach

• Woodpecker

More than a cold email tool, Woodpecker is a complete outreach platform trusted by both SMBs and enterprise companies. It brings everything you need into one place: cold emailing, email verification, warm-up, LinkedIn automation, and deliverability tracking. This makes it it one of the most efficient solutions for in-house outreach.

What sets it apart:

1. Send personalized messages at scale with custom schedules, inbox rotation, and adaptive sending to stay within safe limits.
2. Unlike most tools, Woodpecker includes free email verification to remove invalid addresses and free warm-up to build your sender reputation automatically.
3. Its Deliverability Monitor predicts potential issues and adjusts sending to keep your messages out of spam folders.
4. Combine LinkedIn invites, messages, or profile visits with your email campaigns, creating a smooth multi-channel approach without leaving the app.
5. Access a database of over 1 billion verified B2B contacts, filtered by job titles, industry, or location, helping you target the right potential clients fast.
6. Perfect for growing teams or agencies managing multiple accounts: run, monitor, and report on all client campaigns in one dashboard.

Woodpecker’s setup takes minutes. You can buy domains with SPF, DKIM, and DMARC pre-configured, warm them up safely, and start reaching prospects right away. Its adaptive sending keeps you within healthy limits, while condition-based campaigns let you send different follow-ups depending on a prospect’s behavior.

Users praise Woodpecker’s mix of personalization and automation, scaling one-to-one conversations without losing authenticity. The interface is clean, intuitive, and integrates easily with tools like HubSpot, Pipedrive, Calendly, Zapier, and Google Sheets.

If you want an in-house solution that balances automation with genuine relationship-building, Woodpecker is one of the best tools available. You can start a free 7-day trial (no credit card required) or watch a demo to see how it fits your outreach strategy.

• Lemlist

Known for its strong personalization features, Lemlist lets users embed images, variables, and videos in Linkedin messages or emails. The built-in deliverability booster warms up domains automatically. Many satisfied clients reference specific details like improved open rates and stronger social proof after switching to it.

• Saleshandy

Offers advanced analytics for cold outreach campaigns and team collaboration features. It helps schedule follow ups automatically based on engagement, shortening the buyer’s journey and helping close more deals faster. Its reporting dashboard gives clear insights into performance across multiple industries.

• Instantly

Ideal for startups and smaller teams that want a simple setup. Instantly’s AI analytics tools measure performance in real time, showing which job titles engage most and where to optimize targeting. Combined with smart throttling and personalization, it helps maintain strong sender reputation while scaling outreach.

In-house outreach: best practices

1. Start small and test continuously. Launch pilot cold outreach campaigns targeting a few hundred contacts before scaling. Track replies, lead conversion rates, and meeting bookings to refine your messaging.
2. Use verified data. Build prospect lists using intent data or verified sources to ensure accuracy.
3. Personalize every touchpoint. Reference specific details about each company or role. Mention social proof such as customer logos, case studies, or success stories to build trust.
4. Stay compliant. Follow data protection and anti-spam rules when running email or LinkedIn messages.
5. Measure and optimize. Rely on built-in analytics tools to see where prospects drop off in the buyer’s journey, then tweak subject lines or timing.
6. Keep consistent follow-ups. Don’t stop after the first email. Schedule follow ups two to four days apart to increase reply rates.

Comparison: agency vs in-house

Choosing between outsourcing and managing outreach internally comes down to key factors like control, cost, scalability, and expertise.

Both approaches can deliver results, but they serve different needs depending on your team size, goals, and available resources.

Factor 1: Cost and scalability

Agency: Higher upfront costs but includes a full team of SDRs, copywriters, and data researchers. Agencies like Belkins or LevelUp Leads already have tools and domain warm-up systems in place, saving setup time.

In-house: Cheaper over time but slower to start. Requires spending on tools, verified data, and training. Setup can be time consuming for small teams without dedicated staff.

Factor 2: Control and customization

Agency: Limited day-to-day flexibility but offers proven systems and optimized templates that convert well. Ideal for teams wanting ready-made processes and less manual work.

In-house: Full creative control over tone, structure, and messaging. Easier to align with brand voice and customize campaigns, but requires more effort and testing.

Factor 3: Risk and expertise

Agency: Agencies are experienced with compliance, deliverability, and analytics. They manage domain health and intent data safely, reducing risks to your reputation.

In-house: Teams must handle everything, from deliverability to testing. Without expertise, campaigns may underperform or trigger spam filters.

Factor 4: Performance and transparency

Agency: Delivers faster results thanks to established systems and data, though visibility into processes can be limited. Top agencies like SalesHive or Cleverly share performance dashboards.

In-house: Full transparency into every stage of outreach but slower optimization. Requires time to analyze metrics and learn what drives engagement.

Factor 5: Relationship and learning curve

Agency: Focused on efficiency and quick wins. Best for scaling fast or entering new markets. Learning is limited since the process stays external.

In-house: Builds long-term knowledge and insight into your audience. Helps refine your pitch and messaging. Slower progress but stronger internal capability over time.

Best for:

Agency: Companies that need speed, expertise, and a quick pipeline boost.

In-house: Teams that value visibility, skill growth, and authentic brand alignment.

In short:

• Go with an agency if you need speed, expertise, and an immediate pipeline boost.
• Go in-house if you want full visibility, long-term skill growth, and better brand alignment.

Many growing enterprise companies choose a hybrid model: outsourcing early outreach while keeping personalization and follow ups in-house. This mix helps teams scale efficiently while staying authentic in communication.

Checklist for choosing a cold outreach path

Before deciding how to run your cold outreach campaigns, evaluate these key factors carefully.

The right choice depends on your goals, team capacity, and how quickly you need results.

1. Define your goals

Do you want to scale fast, or build long-term expertise? Agencies like Belkins or LevelUp Leads deliver quick positive responses and booked calls, while in-house teams build lasting skills and brand consistency.

2. Assess your resources

Do you have time to manage tools, data, and follow up emails? Running outreach internally can be time consuming without a dedicated SDR or marketer. Agencies handle the heavy lifting so your team can focus on core business activities.

3. Understand your audience

Identify job titles and pain points early. The more precisely you define your target audience, the better your lead conversion rates. Tools like Woodpecker or Lemlist help refine targeting using intent data and engagement insights.

4. Set your budget

Compare the total monthly cost of outsourcing versus software subscriptions, data lists, and deliverability tools. Agencies may seem pricier, but they include expertise, copywriting, and analytics tools that would otherwise require extra spend.

5. Track and review performance

Whether outsourced or in-house, monitor open rates, replies, and conversion metrics. Use dashboards and regular reviews to reference specific details, like which subject lines or LinkedIn messages generated more engagement.

6. Don’t skip the human element

No matter the method, personalization drives results. Prospects respond to genuine interest, relevant details, and steady follow ups – not generic outreach templates.

Conclusion & recommendations

Cold outreach in the U.S. remains one of the most dependable ways to grow your sales pipeline. But it demands structure, patience, and clear goals.

No matter if you choose an agency or go in-house, success comes from understanding your audience, using the right tools, and keeping outreach personal.

If your goal is speed and predictability, agencies like Belkins, SalesHive, or Cleverly can deliver quick results with expert-managed systems. They bring experience, analytics tools, and proven scripts that help turn potential clients into booked meetings.

But if you prefer hands-on control and want to build long-term expertise, running outreach in-house gives you freedom and full visibility.

With tools like Woodpecker, you can automate campaigns, manage follow up emails, and track lead conversion rates in one dashboard without losing the human touch.

Ready to take ownership of your outreach? Start your next cold email campaign with Woodpecker and see how easy it can be to start real conversations that lead to more deals.