We've worked in cold email since 2020. Here's an honest breakdown of the agencies worth considering — including where we fit.
Last updated: April 2026
| # | Agency | Starting Price | Best For | Clutch Rating |
|---|---|---|---|---|
| 1 | Growleady | $3,500/mo | Done-for-you at scale | 4.9 |
| 2 | Belkins | $4K–$15K/mo | Omnichannel outreach | 4.9 |
| 3 | CIENCE | $4.2K–$9K/mo + setup | Enterprise AI stack | 4.6 |
| 4 | Martal Group | $3K–$11K/mo | Tech / SaaS companies | 4.7 |
| 5 | OutreachBloom | $1,900+/mo | Budget-conscious teams | 4.5 |
| 6 | SalesHive | $3K–$8K/mo | Month-to-month flexibility | 4.6 |
| 7 | Cleverly | $397–$997/mo | LinkedIn + email combo | 4.7 |
| 8 | Pearl Lemon Leads | $3K–$6K/mo | SMBs | 4.8 |
| 9 | SalesBread | $3K+/mo | Ultra-personalized outreach | 4.8 |
| 10 | RevBoss | $2.5K–$6K/mo | SaaS and agencies | 4.5 |
Growleady built the Growleady Outbound Framework after sending over 50 million cold emails for 500+ B2B clients since 2020. The framework covers every stage of outbound: ICP definition, domain infrastructure, copy, deliverability, and ongoing optimization. Clients typically see 2-15% reply rates within the first month of launch.
What sets Growleady apart is full infrastructure ownership. The team provisions and warms dedicated sending domains on your behalf, manages SPF/DKIM/DMARC, and monitors inbox placement daily. You get a dedicated account manager, weekly performance reports, and direct Slack access to your campaign strategist.
Pricing starts at $3,500/month with a minimum three-month engagement. That covers strategy, list building, copywriting, technical setup, campaign management, and reporting. There are no hidden fees for tools or data credits.
Belkins is one of the larger agencies in the space with over 1,000 clients across multiple verticals. Their strength is omnichannel: they combine cold email, LinkedIn touches, and sometimes even cold calling into unified sequences. They also built Folderly, a dedicated email deliverability platform.
The team is sizable, which means you get specialized roles — separate SDRs, copywriters, and deliverability specialists. For companies that want multi-channel orchestration managed by a single partner, Belkins is a strong pick. They also publish case studies with real pipeline numbers, which is refreshing.
CIENCE targets mid-market and enterprise buyers with a proprietary AI-powered platform called GO Data. They combine machine learning for lead scoring with human SDRs who execute multi-channel campaigns. Their tech stack is genuinely impressive — intent data, visitor identification, and predictive analytics are baked in.
The trade-off is complexity. Onboarding takes longer, pricing includes setup fees that can run into the thousands, and the platform has a learning curve for the internal stakeholders who need to interface with it. If you are an enterprise with a complex ICP and budget to match, CIENCE delivers.
Martal Group positions itself as a B2B lead generation agency specifically for technology and SaaS companies. They have a global SDR network and use intent data from platforms like Bombora to prioritize outreach to accounts already researching solutions in your category.
Their model is interesting: you can start with outbound-only and layer in inbound qualification, appointment setting, or even fractional SDR services. The flexibility is appealing, but some clients report variable quality depending on which SDR is assigned. The three-month minimum is standard.
OutreachBloom is one of the most affordable options on this list, making it a solid choice for startups and SMBs testing cold email for the first time. Their model focuses purely on email — no LinkedIn, no phone — which keeps costs down.
At $1,900/month they cover strategy, list building, copy, and campaign management. The team is smaller and newer compared to agencies like Belkins or CIENCE, so you may not get the same depth of expertise. But for teams on a budget who want a managed service rather than DIY, OutreachBloom is worth a look.
SalesHive differentiates on flexibility: they offer month-to-month contracts, which is rare in this industry. Their proprietary AI platform handles lead scoring and campaign optimization, while human SDRs manage execution and reply handling.
The no-commitment model is genuinely attractive for companies that want to test cold email without locking in for three to six months. The trade-off is that the service can feel less personalized than boutique agencies — you are working with a platform-first model rather than a deeply embedded partner.
Cleverly started as a LinkedIn lead generation agency and has since added cold email. Their pricing is the lowest on this list — plans start at $397/month for LinkedIn-only and go up to $997/month for LinkedIn plus email. They are a strong fit for solopreneurs, consultants, and small agencies.
The limitation is scale. Cleverly works best for low-volume, high-touch outreach where LinkedIn is the primary channel. If you need to send thousands of emails per month or target large enterprise accounts, you will outgrow their model quickly.
Pearl Lemon Leads is a UK-based agency that serves SMBs across various industries. They offer a flexible scope of work — you can engage them for just list building, just email copy, or a full done-for-you package. This modular approach is useful for companies that already have parts of their outbound stack in place.
The team is smaller, which means you get more direct access to senior strategists. However, the smaller size also means capacity constraints during busy periods. They are a good fit for SMBs that value a personal relationship with their agency.
SalesBread takes a radically different approach: they promise one qualified lead per day through hyper-personalized outreach. Every email is researched and written by a human — no AI-generated templates, no mail merge at scale. The result is higher reply rates and more meaningful conversations.
The downside is obvious: volume. If you need hundreds of meetings per quarter, SalesBread's model will not get you there. But if you are selling a high-ACV product where every conversation matters, their approach can outperform volume-based agencies on ROI.
RevBoss focuses on email-led outbound for SaaS companies and agencies. Their model emphasizes steady, predictable lead flow rather than aggressive scaling. They build targeted lists, write sequences, and manage campaigns with a focus on consistency over spikes.
The platform provides a clean dashboard for tracking opens, replies, and meetings. RevBoss is a solid choice for companies that want a reliable partner for ongoing pipeline generation without the complexity of multi-channel orchestration.
Choosing the right cold email agency comes down to four factors: deliverability infrastructure, transparent pricing, proven results, and contract flexibility.
Deliverability infrastructure is the single biggest differentiator. Any agency can write emails and build lists. The hard part is getting those emails into the primary inbox. Look for agencies that provision dedicated sending domains on your behalf, manage SPF/DKIM/DMARC authentication, run gradual warmup protocols, and monitor inbox placement daily. If an agency asks you to send from your primary company domain, walk away — that is a red flag for deliverability negligence.
Transparent pricing matters more than the sticker price. Some agencies quote low monthly fees but tack on data credits, tool licenses, setup fees, or per-lead charges that double the effective cost. Ask for a fully loaded price that includes everything: strategy, list building, copy, tools, domains, and reporting. If you cannot get a clear answer, that tells you something.
Case studies with real data separate credible agencies from marketing-heavy ones. Look for specific metrics: reply rates, meetings booked, pipeline generated, and time to first result. Vague testimonials ("great results!") are meaningless. Ask to speak with a current client in your industry.
Contract flexibility varies widely. Most agencies require three-month minimums, some require six or twelve months. Month-to-month options exist (SalesHive, for example) but often come with less personalization. A three-month commitment is reasonable — it takes 4-6 weeks to fully optimize a campaign — but anything beyond six months should raise questions.
The Growleady Outbound Framework is an example of what a structured methodology looks like: it codifies every step from ICP definition through ongoing optimization into a repeatable system. When evaluating agencies, ask what their process looks like. If the answer is vague or inconsistent, the execution will be too.
Common questions about hiring a cold email agency in 2026.
Book a free strategy call. We will review your ICP, outline a campaign plan, and give you a transparent quote — no pressure, no commitments.