There are two kinds of outbound agencies. The ones that flood inboxes with garbage. And the ones that actually get results.
This guide is about the second kind.
In 2025, outbound marketing is still one of the fastest ways to grow. The best outbound agencies don’t just write cold emails. They build smart, targeted campaigns across channels like LinkedIn, email, phone, and even ads. They help you reach the right prospects with the right message, and they do it fast.
We went deep to find the top outbound partners worth working with this year. Whether you're a founder trying to book your first 10 demos or a sales team looking to scale pipeline, these are the agencies that can help you get there.
And if you want to explore agencies by location, we’ve got that too. Scroll to the bottom for a full list of outbound agencies by country and city.
An outbound agency helps businesses grow by going directly to potential customers instead of waiting for them to show up. That means reaching out to the right people with cold emails, LinkedIn messages, phone calls, or even cold ads. It’s about starting the conversation.
Inbound is about attracting leads. Outbound is about finding them, targeting them, and getting their attention.
Good outbound agencies don’t just send messages. They build smart campaigns, from list building to crafting the message to scheduling the follow-up.
These two terms get used interchangeably, and for the most part, that’s fine. But there is a slight difference.
In this post, we’re covering both, as long as they help clients grow through outbound.
Most top outbound agencies offer some or all of the following:
Some go even further and handle appointment setting, CRM updates, or integration with your internal systems.
If you’ve tried running outbound in-house, you already know it’s not as simple as sending a few cold emails and hoping for replies. There’s targeting. There’s messaging. Deliverability. Follow-ups. Testing. And more testing.
Here’s why working with a specialized agency is often the smarter move.
Hiring takes time. Training takes more. And getting results can take months. An outbound agency is already staffed, already trained, and already running campaigns for companies like yours. They plug in, move quickly, and save you the hiring headaches.
Top agencies have run hundreds of campaigns across industries. They know what works, what doesn’t, and how to spot issues before they tank your results. You get a tested playbook instead of figuring it out by trial and error.
Good agencies bring structure. Lead sourcing. Copywriting frameworks. Follow-up schedules. Testing routines. Reporting. They’ve built repeatable systems that are designed to scale with your team.
Most cold emails sound like templates. That’s why they get ignored. Agencies that know what they’re doing personalize messages based on role, pain points, or industry. They write emails that feel real. Messages that actually earn replies.
You’re not hiring an agency to tinker with tools. You’re hiring them to book meetings, drive pipeline, and create real momentum. A great agency focuses on outcomes and builds the execution around what matters most to your business.
Not every agency is built the same. Some are built for speed, some for scale, and some just say they’re outbound experts because it’s trendy. If you want real results, here’s what to look for when choosing your outbound partner.
Outbound that works in fintech won’t always work in SaaS. Messaging that clicks for HR tech probably won’t land in manufacturing. A good agency understands your space, your personas, and how to speak their language. They don’t guess, they already know what works in your market.
It’s not just about having tools. It’s about knowing how to use them. Whether it’s Clay, Instantly, Apollo, or custom workflows, your agency should know how to blend data, automation, and outreach in a way that doesn’t feel robotic.
People can spot a template a mile away. The right partner takes time to personalize messages, not just with {{first name}} but with relevant insights about the company, role, or trigger events. Lazy personalization gets ignored. Smart personalization gets replies.
The best outbound doesn’t live in just one channel. Your agency should know how to blend email with LinkedIn, cold calls, and sometimes even outbound ads. One channel can work. Multichannel works better.
You want to know what’s happening. That means clean reporting, regular updates, clear benchmarks, and no hiding behind buzzwords. A good agency tells you when things are going great, and when they’re not.
Some companies want done-for-you. Others want to collaborate. The right agency works how you need them to. They’ll adapt to your workflow, tools, team size, and involvement level. No one-size-fits-all process.
Here’s the curated list of the best outbound agencies making real impact this year. These are the teams consistently helping businesses generate pipeline, book meetings, and close deals.
SalesCaptain is the go-to outbound partner for B2B teams that care about results, not just activity. They handle the entire outreach process end-to-end, from sourcing and qualifying leads to crafting personalized multichannel campaigns across email, LinkedIn, and more.
What sets them apart is how hands-on they are. Every campaign is built with a clear strategy, customized messaging, and transparent performance tracking. Whether you're an early-stage startup or an enterprise team, SalesCaptain helps you fill your pipeline with the right meetings, faster.
NerdyJoe is known for writing cold emails that actually sound like they’re from humans. No templates. No fluff. They personalize outreach to a level most agencies won’t touch.
Their team builds everything custom and runs detailed experiments to find messaging that converts. Great for companies that care about quality over quantity.
SalesPipe offers on-demand SDRs and fully-managed outbound services for growing B2B companies. Their approach combines targeted lead sourcing, custom messaging, and consistent follow-ups to drive high-quality meetings.
They’re a good fit for companies that want quick scale without hiring an internal sales team.
SalesHive is known for its on-demand SDR model. They let you build custom sales teams that plug into your operations instantly, with support for cold email, calling, and LinkedIn.
Their detailed reporting and US-based reps make them a solid pick for mid-market and enterprise companies.
CIENCE offers a mix of human-led outreach and data-powered targeting. Their services include outbound research, SDR support, and full campaign management across multiple channels.
They’re one of the larger players in the space, with experience in a wide range of industries and markets.
Growth Rhino focuses on helping early-stage B2B startups get traction through cold outreach. They help define your ICP, build lead lists, craft messaging, and manage campaigns from day one.
They’re a smart pick for startups that need fast feedback and early results.
Abstrakt offers outbound sales development, content marketing, and creative support. Their outbound services include lead generation, email outreach, and cold calling tailored to your industry.
They’re a good choice for businesses that want an agency with broader marketing support alongside sales development.
OutboundView specializes in outbound prospecting strategy and execution. They help companies build targeted lead databases, craft messaging, and set up outreach systems that can be managed in-house or fully outsourced.
They’re a strong option for teams that want to build a repeatable sales process without hiring full-time staff.
Martal Group connects tech companies with decision-makers through personalized outreach. Their team handles lead research, messaging, outreach, and appointment setting using a blend of email, LinkedIn, and calling.
They work mostly with B2B tech and SaaS companies aiming to enter or expand in North America and Europe.
Sapper builds outbound campaigns designed to land meetings with qualified leads. They focus on crafting sharp messaging and delivering it through personalized email sequences. They also offer services for sales enablement and CRM optimization.
They’re best suited for companies looking for full-cycle outbound support.
Leadium combines lead research, outbound copywriting, and campaign execution into one service. They support cold email, LinkedIn outreach, and sales development with a strong emphasis on data quality and personalization.
They’re a good match for teams that want clean lists, strong messaging, and measurable results.
Operatix is focused on accelerating outbound sales for B2B software companies. They offer appointment setting, lead nurturing, and full outbound sales development. Their team often partners directly with enterprise sales teams to extend reach and speed up deal cycles.
They’re ideal for high-growth or enterprise-level software firms.
Belkins delivers end-to-end appointment setting and lead generation for B2B companies. Their outbound team builds highly targeted lead lists, writes custom messaging, and runs cold outreach across email and LinkedIn.
They’re known for consistent delivery and strong process management, making them a dependable option for companies that want steady pipeline growth without micromanagement.
Pearl Lemon Leads focuses on cold email and LinkedIn outreach, particularly for startups and small businesses. Their team handles prospecting, copywriting, campaign setup, and follow-ups, offering a lightweight but effective outbound solution.
They’re a good pick for early-stage companies or teams just starting with outbound.
Cleverly is a LinkedIn-focused outbound agency that helps clients connect with qualified leads through targeted messaging and automation. While they also offer cold email, their specialty lies in leveraging LinkedIn outreach at scale.
They’re ideal for companies looking to tap into LinkedIn without running it in-house.
SalesBread delivers one-on-one style outbound focused on ultra-personalized cold email and LinkedIn outreach. Their process is simple but effective, write fewer messages, but make every one count.
They’re a great fit for founders or sales leaders targeting high-value accounts who want thoughtful outreach over volume.
Addlium focuses on LinkedIn-based lead generation for B2B service companies. They build campaigns around profile optimization, connection strategies, and tailored messaging sequences that warm up prospects before the pitch.
They’re best suited for teams looking to generate interest and conversations directly on LinkedIn.
Growth.cx specializes in helping SaaS companies break into new markets through multichannel outbound. They support lead research, messaging, campaign management, and data-driven testing to refine results over time.
Their process works well for companies in expansion mode that want outbound to support market entry.
If you're trying to figure out whether to build your own outbound team or partner with an agency, you're not alone. It’s one of the most common questions we hear, and the answer depends on what stage you're in, what resources you have, and how fast you need results.
Let’s break it down.
Building an in-house outbound team makes sense if you already have solid sales operations and long-term resources. Here’s when it might be the better option:
Still, it’s not always sunshine. Hiring SDRs is expensive. Mistakes are common. And results can be slow to show up.
Hiring an outbound agency gives you leverage, speed, scale, and proven systems without hiring anyone.
You should go this route if:
Bottom line: if you’re early stage, resource-constrained, or want to move fast, hiring a good agency is a smarter move.
If you’ve got the time, team, and capital, building in-house could be worth it.
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