Best Cold Email Agencies
Agencies that plan, write and send cold email campaigns for B2B companies, from inbox setup to booked meetings.
Belkins
B2B lead generation and appointment setting agency running omnichannel outbound across email, LinkedIn and phone since 2017.
Appointment setting · Cold email · LinkedIn outreach · Cold calling · Lead list building
CIENCE
Managed B2B lead generation with outsourced SDR teams, audience data and outbound campaigns, from $2,000 a month.
Outsourced SDRs · Appointment setting · Lead list building · Cold email · Cold calling
SalesHive
B2B sales agency whose US-based SDRs run cold calling and cold email on SalesHive's own AI platform, with no long-term contracts.
Outsourced SDRs · Cold calling · Cold email · Appointment setting
Martal Group
Canadian outsourced sales and lead generation agency whose SDRs run email, LinkedIn and calling for B2B tech companies.
Outsourced SDRs · Lead list building · Cold email · LinkedIn outreach · Cold calling · Appointment setting
Leadium
B2B lead generation agency focused on top-of-funnel data and appointment setting, run by managed SDR teams.
Appointment setting · Lead list building · Cold email · Outsourced SDRs
Callbox
Long-running B2B lead generation and appointment setting company that books meetings with decision makers, with 20+ years of campaigns.
Appointment setting · Cold calling · Lead list building · Cold email
Operatix
Outsourced SDR agency specialised in B2B software vendors, with SDR teams in London and Dallas. Part of memoryBlue since 2023.
Outsourced SDRs · Appointment setting · Cold calling · Cold email
Cleverly
Done-for-you B2B lead generation across LinkedIn, cold email and cold calling, with LinkedIn plans starting in the hundreds a month.
LinkedIn outreach · Cold email · Cold calling
Sopro
UK prospecting service that finds ideal prospects and runs multichannel outreach, connecting interested buyers directly to you.
Lead list building · Cold email · LinkedIn outreach · Appointment setting
Growth Engine X
Cold email agency sending 8 million+ emails a month for B2B companies with $1M+ revenue, with a free test campaign.
Cold email · Clay and GTM engineering · Lead list building · Email deliverability
SalesRoads
Sales outsourcing firm providing appointment setting and outsourced SDR teams, with retainer and pay-per-performance options.
Appointment setting · Outsourced SDRs · Cold calling · Cold email
Pearl Lemon Leads
London lead generation agency booking qualified B2B sales calls through cold email, LinkedIn, telemarketing and appointment setting.
Lead list building · Cold email · LinkedIn outreach · Cold calling · Appointment setting · Outsourced SDRs
LeadBird
Done-for-you B2B lead generation across cold email, calls and LinkedIn, with pay-per-lead pricing and leads synced to your CRM.
Cold email · Lead list building · LinkedIn outreach · Cold calling
Sapper Consulting
Outbound firm whose Bionic SDR runs email, direct mail, calls and LinkedIn together, with guaranteed meetings. Part of the Abstrakt group.
Cold email · Cold calling · LinkedIn outreach · Appointment setting
Lead Cookie
Quality-first B2B lead generation agency that hand-researches every prospect for LinkedIn and email outreach, from $1,500 a month.
LinkedIn outreach · Cold email · Lead list building
Hypergen
B2B cold email agency using intent data to reach prospects showing buying signals, with 120+ clients booked meetings.
Cold email · Lead list building · Appointment setting
How to choose a cold email agency
A cold email agency handles every part of cold outreach: buying and setting up sending domains, warming up inboxes, building and verifying lead lists, writing campaigns, sending at a safe volume, managing replies and booking meetings. Done well, it is one of the most cost-effective ways to fill a B2B pipeline.
What good cold email agencies do
- Protect your main domain. They send from separate lookalike domains and many inboxes, never from the domain you use for everyday business.
- Take deliverability seriously. Expect warm-up, SPF, DKIM and DMARC setup, list verification and monitoring of inbox placement and bounce rates.
- Target tightly. The best results come from narrow, well-researched lists and messages built around a clear offer, not from blasting large lists.
- Test constantly. Good agencies test subject lines, angles and offers, and report on positive replies and meetings rather than sends and opens.
Questions to ask
- Who owns the domains, inboxes and lead lists if we stop working together?
- How many emails will you send per month, and from how many inboxes?
- Where does your data come from, and how do you verify it?
- Who handles replies, and how quickly are interested prospects passed to us?
- What results have you achieved for companies with a similar offer and deal size?
Pricing
Most cold email agencies charge a monthly retainer, and some add setup fees for infrastructure. Others work on a pay-per-meeting or pay-per-lead basis. Expect the first two to four weeks to go on setup and warm-up before campaigns reach full volume. If you'd rather run cold email yourself, compare cold email software and infrastructure providers.
Frequently asked questions
What does a cold email agency do?
It sets up sending domains and inboxes, builds and verifies lead lists, writes and sends campaigns, manages replies and books meetings for your sales team.
Will a cold email agency damage my domain?
A good one won't, because it sends from separate domains rather than your main one and keeps volumes per inbox low. Ask each agency how it protects your primary domain before you sign.
How long before a cold email agency gets results?
Setting up and warming new inboxes usually takes two to four weeks, so most campaigns reach full volume in the first month or two, with results improving as messaging is tested.
How much does a cold email agency cost?
Retainers commonly start from a few thousand dollars a month, sometimes with setup fees for infrastructure. Pay-per-meeting and pay-per-lead agencies charge for results instead.
Should I own the sending domains?
Yes, ideally. Ask for the domains, inboxes and lead lists to be registered to or handed over to you, so you keep them if the agency relationship ends.
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