Researched agency ranking
Best Cold Email Agencies for B2B (2026)
11 cold email agencies for B2B compared on outbound services, proof and pricing, picked from the 36 agencies we track for this service.
- Agencies reviewed
- 36
- Median minimum
- $1,000/mo
- Budget tier share
- 53%
- Average rating
- 4.82
On this page
- Quick answer
- Key takeaways
- Comparison table
- The 11 best cold email agencies for B2B
- Best cold email agency for B2B by need
- How much cold email agencies for B2B cost
- How we ranked them
- How to choose a cold email agency for B2B
- Agency vs freelancer vs in-house
- What a cold email agency for B2B does
- FAQ
- More cold email agencies for B2B
- Related rankings
Which cold email agency for B2B is best?
The best cold email agencies for B2B in 2026 include Leadium for done-for-you SDR work, Belkins for appointment setting at scale, Salesar for dashboard-led outbound, Martal Group for dedicated SDR teams and SalesRoads for calling-led programmes. UltraGrowthMedia is the pick for teams that want cold email and LinkedIn outreach from one team. The median minimum across the 36 agencies we track is $1,000 a month, and 18% start above $5,000.
Key takeaways
- The median minimum for a cold email agency for B2B in our directory is $1,000 a month, and 82% of the 36 agencies start at or under $5,000.
- B2B buyers often get cold email as one channel in an SDR programme. Leadium, Belkins, Martal Group and SalesRoads all combine email with calling, so ask what share of meetings comes from email.
- Sales cycles shape the brief. SalesRoads, Callbox and Belkins list enterprise or manufacturing clients, while Salesar and Purple Sales are more SaaS-led, so match the agency to your deal size and buying committee.
- Deliverability decides results. Ask about domain setup, authentication, mailbox warm-up and list sourcing before you ask about copy.
- Only 11% of the agencies in this pool offer AI search work, so budget separately if you also want buyers to find you in ChatGPT-style research.
Best cold email agencies for B2B compared
| # | Agency | Best for | Min. budget | Rating |
|---|---|---|---|---|
| 1 | Leadium | Overall for done-for-you B2B SDR work | $1,000+ | ★5.0 (90) |
| 2 | Belkins | B2B appointment setting at scale | $5,000 (finance starter package, per its site) | ★4.9 (234) |
| 3 | UltraGrowthMedia | Dedicated cold email and LinkedIn outbound | $3,000 | ★4.9 |
| 4 | SalesAR | Dashboards and weekly reviews | $1,000+ | ★4.9 (136) |
| 5 | Martal Group | Dedicated SDR teams in North America | $1,000+ | ★4.8 (109) |
| 6 | SalesRoads | Calling-led SDR teams with proof | $10,000+ | ★4.9 (69) |
| 7 | Callbox | Multilingual B2B outreach | Not published | ★4.6 (128) |
| 8 | Purple Sales | Outbound tied to HubSpot and inbound | $10,000+ | ★4.7 (26) |
| 9 | A-Sales | Multilingual cold calling plus email | $1,000 | ★4.9 (84) |
| 10 | SeeResponse | SaaS outbound plus ABM | $5,000 | ★4.7 |
| 11 | Content Chemistry | Outbound alongside HubSpot and SEO | $2,500 | ★4.9 (28) |
Ratings are public Clutch, G2 or Google averages with review counts in brackets. Minimums are monthly unless stated.
The 11 best cold email agencies for B2B in 2026
Each agency below leads a specific category. Start with the one that matches your situation rather than reading top to bottom.
#1Best overall for done-for-you B2B SDR work
Leadium
Outbound appointment setting for B2B teams via email, calls and LinkedIn
Leadium is a Las Vegas outbound agency of 51 to 200 people with a perfect 5.0 on Clutch across 90 reviews. Its engagement bundles lead research, deliverability and a done-for-you SDR team, sending email, phone, LinkedIn and gifting to B2B buyers. It lists cybersecurity, SaaS, freight and digital transformation among its industries, and names Segment, SignalWire and Veem as clients. Clutch lists a $1,000+ minimum.
Notable clients
- Segment
- OpenEdge
- SignalWire
- Phunware
- Bottomline
- Veem
Watch out
Reviewers mention a slow initial ramp-up and wanted qualification criteria defined earlier.
#2Best for B2B appointment setting at scale
Belkins
Outbound appointment setting for B2B firms, with a dedicated finance and consulting offer
Belkins in Denver has 234 Clutch reviews averaging 4.9, the largest sample in this ranking, and a team of 51 to 200. It focuses on B2B firms, running email, calling and LinkedIn into booked appointments, and offers HubSpot CRM and deliverability consulting. Its industries span SaaS, IT services, consulting, manufacturing and logistics, and clients include General Electric and NVIDIA. It publishes a $5,000 starter price for finance clients.
Notable clients
- Mona
- Lisnr
- Token
- GroupFund
- Ordway
- Lunupay
Watch out
The $5,000 starter package is steep for small firms, and some reviewers saw leads outside their criteria.
#3Best dedicated cold email and LinkedIn outbound
UltraGrowthMedia
Full-stack marketing for ambitious growth-stage brands.
UltraGrowthMedia runs cold email as a complete outbound programme: ICP definition, about two weeks of domain and DNS set-up on secondary sending domains, verified lead lists, copywriter-written sequences and ongoing A/B testing. It says it typically targets 10 to 20 qualified meetings a month from email and 15 or more from LinkedIn, and one client reports a 60% drop in cost per lead within 90 days. SEO and AI search sit in the same team for when outbound alone isn't enough. Founded in 2022 by Tushar Dey, the 27-person remote team works in weekly sprints, clients talk directly to the practitioners doing the work, and progress shows up on live reporting dashboards. Retainers start at $3,500 a month.
Watch out
A small team limits monthly capacity, and it is not ideal if you only want one narrow channel.
Run by our team.
#4Best for dashboards and weekly reviews
SalesAR
Outbound lead generation and appointment setting with managed cold email infrastructure
Salesar of Dover, Delaware gives B2B teams a live dashboard and weekly reviews inside a four-step outbound process. Cold email sits beside LinkedIn outreach, prospect research and account-based marketing, with sending infrastructure and anti-spam support handled for the client. It has 136 Clutch reviews at 4.9, lists SaaS, IT, financial services and manufacturing clients, and publishes case studies with contacts and replies. Clutch lists a $1,000+ minimum.
Notable clients
- Akridata
- Foxit
- WEYTEC
- AwardWallet
- Bulu
- Poyant
Watch out
No prices appear on the site, and the contact forms start at $3,000 a month.
#5Best for dedicated SDR teams in North America
Martal Group
Outsourced B2B lead generation and appointment setting across calls, email and LinkedIn
Martal Group in Oakville, Ontario has offices in Canada and the US and 109 Clutch reviews averaging 4.8. It assigns dedicated SDR teams that run cold calling, email and LinkedIn for B2B companies, with weekly syncs. It lists medical, telecoms, manufacturing and business services among its industries, and names Awin, US Cloud and Wrk as clients. Clutch lists a $1,000+ minimum and a $25 to $49 hourly band.
Notable clients
- Awin
- Blaze AI
- US Cloud
- ICUC Social
- Wrk
- Lease a Bike
Watch out
A few reviewers said ICP calibration took weeks, and one found the cost unsustainable against results.
#6Best for calling-led SDR teams with proof
SalesRoads
Outsourced SDR teams that book B2B appointments by phone and email
SalesRoads in Boca Raton has run B2B appointment setting since 2007, per Clutch, with 69 reviews averaging 4.9. Its SDR teams lead with outbound calling and layer email prospecting on top, and it publishes named case studies. Its industries include manufacturing, government, SaaS, healthcare and logistics, and clients named include Quest Diagnostics, Microsoft and Parker Hannifin. The team is 51 to 200 people.
Notable clients
- Quest Diagnostics
- Microsoft
- Parker Hannifin
- Kuebix
- Crewhu
- AchieveIt
Watch out
Clutch shows a $10,000+ minimum, and cold email is a supporting channel rather than the core.
#7Best for multilingual B2B outreach
Callbox
Multichannel B2B lead generation and appointment setting agency with logistics and manufacturing work
Callbox in Los Angeles is a 1,000-plus person B2B lead generation firm with 128 Clutch reviews at 4.6. It runs email, calling and LinkedIn outreach with appointment setting, and adds multilingual outreach across Asia-Pacific, Europe and Latin America. It lists software, cybersecurity, fintech and healthcare clients, and Clutch summarises its cost at $12,000 to $80,000 a year. Its logistics case study reports 146 appointments in 12 months, per Callbox.
Notable clients
- Kreller Group
- Westernacher Consulting
- B2X Global
- Body Vision Medical
Watch out
Reviewers cited weaker results in non-English markets, and the scale suits larger programmes more than small tests.
#8Best for outbound tied to HubSpot and inbound
Purple Sales
Toronto outsourced sales and HubSpot agency for B2B appointment setting
Purple Sales in Toronto pairs outbound SDR and BDR work with HubSpot implementation, B2B SEO and content. Prospecting runs across LinkedIn, email and calls, and its case studies state meeting counts. Clutch shows 26 reviews averaging 4.7 with Premier Verified status, and it lists technology, SaaS, fintech and cybersecurity among its industries. It has a team of 11 to 50 and a bilingual English and French capability.
Notable clients
- Ortec Environment Services
- Atmanco
- Cyberspective
- DTS
Watch out
Its site states a six-month minimum commitment, and Clutch shows a $10,000+ minimum.
#9Best for multilingual cold calling plus email
A-Sales
Swedish outbound agency combining cold calling, cold email and LinkedIn to book B2B meetings
A-Sales in Stockholm runs a large in-house calling team with cold email and LinkedIn alongside, and offers a pay-per-appointment option. Clutch reviewers cite 26 working languages, and it offers GDPR, SOC 2 and ISO 27001 documentation on request, per its site. It lists SaaS, healthcare, finance and cybersecurity among its industries, and has 84 Clutch reviews at 4.9. The team is 51 to 200 and Clutch lists a $1,000 minimum.
Notable clients
- Sully.ai
- Clarity
- Gartner
- Jotform
- HCL Software
- LogicMonitor
Watch out
Calling is its main channel with email in support, and one 0.5-star review alleged few meetings.
#10Best for SaaS outbound plus ABM
SeeResponse
B2B demand generation and marketing ops for SaaS and tech companies
SeeResponse is a McLean, Virginia agency, founded in 2019, built for B2B SaaS, software and professional services companies. It lists outbound marketing, email marketing, account-based marketing and GTM strategy next to HubSpot and marketing operations, so outbound sequences can share data with inbound programmes. Its clients include VWO, ModelOp and Knack, and entry pricing starts at about $2,500 a month.
Notable clients
- VWO
- ModelOp
- Joovv
- Curacubby
- Ximplifi
- ViewSpection
Watch out
A younger agency with a small team that may stretch thin on large simultaneous engagements, and not suited to B2C.
#11Best for outbound alongside HubSpot and SEO
Content Chemistry
Sydney B2B agency running SEO, AEO and demand gen on HubSpot
Content Chemistry is a Sydney B2B agency that lists outbound BDR and SDR programmes, email marketing and automation, account-based marketing and demand generation next to SEO and AI search work. It is a HubSpot Platinum Solutions Partner with a 4.9 rating from 28 reviews in HubSpot's directory, and its clients include nib, Investa and Nanosonics. That makes it suited to teams that want outbound connected to CRM data.
Notable clients
- nib
- Investa
- Uber for Business
- First Sentier Investors
- Nanosonics
- RateMyAgent
Watch out
Cold email is one service among many, pricing beyond a $2,500 minimum is not published, and the work is tied closely to HubSpot.
Best cold email agency for B2B by need
Done-for-you SDR workLeadium
Appointment setting at scaleBelkins
Dedicated cold email and LinkedInUltraGrowthMedia
Dashboard-led outboundSalesAR
Dedicated SDR teamsMartal Group
Calling-led programmesSalesRoads
Multilingual outreachCallbox
Outbound tied to HubSpotPurple Sales
SaaS ABM and outboundSeeResponse
How much does a cold email agency for B2B cost in 2026?
Cold email agency pricing depends on volume, list sourcing and whether calling or LinkedIn is included. These figures come from the published minimums of the 36 agencies in our directory, 34 of which show a USD number.
| Tier | Monthly minimum | Share of agencies | Who it suits |
|---|---|---|---|
| Budget | $1,000/mo or less | 53% | Packaged outbound for small teams testing one segment. |
| Mid-market | $1,000 to $5,000/mo | 29% | B2B companies running steady sequences, list research and reply handling. |
| Premium | Over $5,000/mo | 18% | Calling-led SDR teams, multilingual programmes and enterprise account lists, such as the $10,000+ minimums at SalesRoads and Purple Sales. |
Source: published minimum budgets of cold email agencies for B2B in the MakeSuccessOnline directory, October 2026.
Median minimum budget by region
The most common hourly band is $25 to $49 (27% of agencies that publish rates), followed by under $25 (23%) and $100 to $149 (18%).
How we chose the best cold email agencies for B2B
We started with the cold email agencies in the MakeSuccessOnline directory that list B2B clients. 36 qualified, so we scored each on six criteria and kept the 11 strongest. Every profile was researched from the agency's own site plus independent sources such as Clutch, HubSpot's directory or award listings.
- Outbound focus and depthHow central cold email and outbound are to the agency's work, and how they connect to other channels.25%
- B2B fit and named clientsExperience with business buyers, named clients and results we could attribute to a source.20%
- Reviews and reputationRatings and review volume on Clutch, HubSpot or Google, plus recency.20%
- Pipeline and CRM trackingWhether outbound results are tracked to meetings, opportunities and revenue.15%
- Pricing transparency and valueWhether minimums or packages are published, and how cost compares with scope.10%
- Team and AI search readinessTeam size, who runs accounts and real AEO or GEO capability.10%
Rankings are editorial. Agencies cannot pay to appear on this page or to change their position. Read how we review agencies →
How to choose a cold email agency for B2B
- Define the ideal customer firstAgree the titles, industries and company sizes you want to reach. Cold email works on narrow, well-defined lists.
- Ask how lists are sourcedFind out where contacts come from, how they are verified and how opt-outs are honoured.
- Check deliverability set-upAsk about dedicated sending domains, authentication, mailbox warm-up, daily send limits and spam-complaint monitoring.
- Review sample copy and sequencesLook for specific, short, relevant messages tied to a clear offer, not generic templates sent in bulk.
- Decide who handles repliesAgree whether the agency books meetings, qualifies replies or hands them straight to your sales team.
- Agree metrics and ownershipMeasure positive replies and meetings booked, and confirm you own the domains, mailboxes and lead data.
Questions to ask
- Where do the contacts come from, and how are they verified?
- How do you set up and protect sending domains and mailboxes?
- What reply and meeting rates have you seen for clients with a similar offer?
- Who writes and tests the copy, and how often do you change it?
- How do you handle opt-outs and local privacy rules?
- What do we own if we leave, including domains, data and sequences?
Red flags
- Promising a fixed number of meetings without knowing your offer or market.
- Sending from your main company domain, which risks damaging your regular email.
- Bought lists with no verification and no opt-out handling.
- No view of deliverability metrics, only open rates.
- The agency owns the domains, mailboxes or lead data.
Cold email agency for B2B vs freelancer vs in-house
| Cold email agency | Freelancer | In-house SDR team | |
|---|---|---|---|
| Typical cost | Roughly $1,000 to $5,000+/mo | Lower; usually per campaign or hourly | Salaries plus tools and data |
| Skills covered | Lists, copy, deliverability, reporting | Usually copy or setup only | Depends on hires; strong on selling |
| Speed to start | 2 to 4 weeks (domains need warm-up) | Days to weeks | 2 to 4 months to hire and ramp |
| Best for | Testing outbound quickly with expert set-up | Single campaigns | Teams with proven messaging and volume |
| Main risk | Damaged sender reputation if shortcuts are taken | Capacity and continuity | High turnover and ramp time |
What does a cold email agency for B2B do?
A cold email agency for B2B is a company that plans, writes and sends outbound email campaigns to prospective business buyers on a client's behalf. Typical work includes defining the target audience, sourcing and verifying contact lists, setting up sending domains and mailboxes, writing sequences, managing replies and reporting on meetings booked. Many agencies add LinkedIn outreach, and the best ones track results to pipeline instead of opens.
Cold email agency for B2B FAQ
What is the best cold email agency for B2B in 2026?
Leadium suits done-for-you SDR work, Belkins handles appointment setting at scale, and Salesar is built around dashboards and weekly reviews. UltraGrowthMedia lists cold email and LinkedIn as core services, while SalesRoads leads with calling. Pick by deal size, budget and whether you want email alone or a multichannel team.
How much does a cold email agency cost?
Across the 36 agencies we track, the median minimum is $1,000 a month and 18% start above $5,000. SalesRoads and Purple Sales list $10,000+ minimums, while Leadium and Salesar list $1,000+. Pricing usually depends on volume, list sourcing and whether calling is included, so ask for a written scope.
How long does cold email take to work?
Plan for two to four weeks to set up domains, mailboxes and warm-up before volume sends begin, then four to eight weeks of testing before results stabilise. Replies can arrive in the first week, but a reliable meeting rate usually needs several rounds of copy and list changes.
Is cold email still effective for B2B?
Yes, when the list is narrow, the offer is relevant and the sending set-up is healthy. It fails when messages are generic or sent in bulk. Mailbox providers also expect proper authentication and easy unsubscribes, as Google's sender guidelines make clear, so shortcuts hurt deliverability.
How do I choose a cold email agency for B2B?
Ask where contacts come from, how sending domains are protected and what reply and meeting rates similar clients saw. Review sample sequences, confirm who handles replies and make sure you own the domains and data. Check Clutch or directory reviews where they exist.
Is cold email legal for B2B?
Use an agency to test an offer quickly and avoid hiring and ramp time. Build in-house once messaging is proven and volume justifies salaries. Martal Group and Leadium supply dedicated SDR teams, which sits between the two, while SeeResponse runs outbound alongside inbound for one partner across both.
Should I use an agency or build an in-house outbound team?
Some can, though few do it well. Only 11% of agencies in our pool list AEO or GEO work, and UltraGrowthMedia and Content Chemistry are among them. Outbound finds buyers now, while AI search visibility helps them find you later, so ask how an agency would combine the two.
Can a cold email agency help with AI search?
Some can. Three of the four agencies here, 75%, list AEO or GEO work, including Content Chemistry and UltraGrowthMedia. Outbound finds buyers now, while AI search visibility helps them find you later, so ask how an agency would combine the two.
More cold email agencies for B2B
Well-reviewed cold email agencies for B2B that did not make the top list but may suit your market.
Browse all 36 cold email agencies for B2B →
About the reviewer
Editor & Reviewer, MakeSuccessOnline
William Harrison is an editor and reviewer at MakeSuccessOnline. Before a ranking goes live, he checks every claim on the page against each agency's own site, its published case studies and independent reviews on Clutch and G2, and cuts anything he can't verify. He also keeps rankings current, rechecking pricing, team details and client lists as agencies change.