What does a cold email agency do?
A cold email agency runs your outbound email, usually for a monthly fee: it builds the list of people to contact, sets up sending domains and mailboxes, writes and sends the emails and follow-ups, and passes you the people who reply with interest. You take the sales calls.
The pricing pages below spell out the split. OutreachBloom's cold email plan lists building and managing the sending infrastructure, deliverability, the lead list, the messaging (which you approve), A/B testing and managing replies. Modern Inbound says the mailboxes and domains are bought in your name, and hands you every warm lead with the full thread. Some firms that call themselves cold outreach agencies add LinkedIn, and some sell SDRs who also phone.
This post covers email-led agencies: what they publish as prices, what a quote works out to, and when one is worth it. For retainer ranges across all lead generation agencies, contract terms and red flags, see our guide to whether a lead generation agency is worth it.
How much does a cold email agency cost?
Published starting prices run from $698 a month with mailboxes to around £3,000 a month for email-led services, and higher for SDR teams. Some agencies quote only after a call; these five show something on their own pages, checked on 4 November 2026. Each figure is the agency's own.
| Provider | Price on its page | What it says is included | Terms it states |
|---|---|---|---|
| Modern Inbound | $599 a month (Segmented) or $899 (Personalized) for clients billed in dollars (₹50,000 or ₹75,000 + GST in India), plus $99 a month for 30 mailboxes and $150 a year for domains, paid to the providers | Research, targeting, copy, sending from mailboxes in your name, warm leads handed over | Billed quarterly in advance; first 14 days of warm-up free; no guarantees, no refunds |
| OutreachBloom | Cold email from $2,400 a month; LinkedIn outreach $1,000 a month | 10,000 to 100,000 targeted B2B contacts emailed a month; infrastructure, list, copy, replies | No term shown; LinkedIn plan needs Sales Navigator Advanced, paid to LinkedIn |
| Sopro | From around £3,000 a month | Email and LinkedIn outreach, tailored to each client | No minimum contract |
| CIENCE | $2,000 a month campaign team, $499 a month platform, then from $1,750 per offshore SDR or from $3,500 per US or Europe SDR a month, plus a bonus and a setup fee | SDRs who call, email and message; list, campaigns and infrastructure at setup | Month to month; setup fee amount not shown |
| Cleverly | No price shown; a flat monthly retainer plan and a pay-per-lead plan | List building, copy, inbox and domain setup | Month to month, no contracts |
| Siela (an AI agent you run yourself) | $10 of free credit once after onboarding, then credit top-ups of $50 to $2,000; no fixed price per lead | Lead Finder finds and scores leads and sends on LinkedIn, X and email (from a Gmail mailbox you connect) within daily goals you set | Credit doesn't expire; top-ups aren't refundable |
CIENCE's own worked example, five offshore SDRs with the team and platform, comes to $11,249 a month before bonuses. The quotes don't measure the same thing, so turn them into one unit before you compare.
What does a quote work out to per contact, hour and customer?
Three numbers make quotes comparable: cost per contact, cost per hour of your time it frees, and how many customers pay for it. A worked example with OutreachBloom's and Modern Inbound's published prices and our own assumptions:
| Measure | Arithmetic | Result |
|---|---|---|
| OutreachBloom, cost per contact emailed | $2,400 / 10,000 and $2,400 / 100,000 | $0.24 down to $0.024 |
| Modern Inbound, first quarter (Personalized) | $899 x 3 + $99 x 3 + $150 domains | $3,144, as its page also states |
| Modern Inbound, first quarter (Segmented) | $599 x 3 + $99 x 3 + $150 | $2,244 |
| Your hours freed a month, at 12 a week | 12 x 52 / 12 | 52 hours |
| Cost per freed hour | $2,400 / 52 and $698 / 52 | $46.15 and $13.42 |
The 12 hours is our assumption, taken from the middle of the 10 to 15 or more hours a week that five commenters in the February thread below gave as the point where outsourcing pays. If your hour is worth more than the cost per freed hour, the fee is cheaper than doing it yourself, as long as the agency gets results at least as good as yours.
Then check it against your revenue. Northwind Ltd (a sample company) sells a $500-a-month service and assumes a customer stays a year, so each new customer brings $6,000 in the first year. At $2,400 a month, the agency costs $28,800 a year (12 x $2,400), which takes 4.8 new customers to cover ($28,800 / $6,000), or one every two and a half months. At $698 a month, $8,376 a year takes 1.4 customers. At Modern Inbound, $150 a year for domains comes on top, and at either agency so does your own sales time.
When is a cold email agency worth hiring?
Hire one when your own cold emails already start conversations and the sending work is what's holding you back. Use the table to check where you are:
| Deciding fact | Hire an agency | Keep it in-house for now |
|---|---|---|
| Your own cold emails | Get replies and some meetings | Get few or no replies |
| Your best customer | You can describe them in two or three sentences | Still changing month to month |
| Time on the mechanics | Lists, warm-up and inboxes take 10 or more hours a week | A few hours a week |
| Budget | You can pay at least one billing period with no meetings (a quarter in advance at Modern Inbound) | One slow month would hurt |
| Deal value | A customer's first year covers several months of fees | Small, self-serve deals |
| Who you email | Mostly companies | Many UK sole traders or EU individuals, who need consent for marketing email |
If you land in the right-hand column, the cheaper move is a small list you build and write to yourself. Our guide to where to find leads for cold email without junk lists covers the sources. Our introduction to cold outreach across email, LinkedIn and X covers each channel's rules.
What do founders who hired one report?
We read three Reddit threads from January to May 2026 with 56 comments between them, checked on 4 November 2026. Several replies were promotions for agencies, staffing firms or tools, including one from someone who said they run OutreachBloom, so treat it as what posters report; none of it is proof:
- Prove the offer first. In a February 2026 thread on when outsourcing beats doing it yourself, 17 of the 28 comments said, in some form, that an agency should come after you have a proven offer or a clear buyer profile. One set the bar at booking three to five meetings a month from your own cold email.
- The time threshold. Five comments in that thread put a number on it, ranging from 10 to 15 or more hours a week on list building, warm-up and inbox management.
- Retainers versus results. One commenter there objected that a $2,500 to $4,000 monthly retainer pays the agency the same for zero meetings or twenty, and preferred paying per meeting held.
- Bad data sinks good agencies. In a January 2026 thread on a founder's first agency, two of eight comments said their first agency failed because half the list was role inboxes, recycled emails or people who had already left. One wrote: "Agencies multiply whatever you give them." Another said three months on a cheap plan gave very poor results.
- It depends on the sale. In a May 2026 r/sales thread (20 comments), one account executive said two SDR-as-a-service programmes failed for technical products with long ramp times; another said a hired SDR service worked, that the cost per successful meeting has to suit both sides, and that in their view it only works well for a more expensive sale.
Who is responsible for the emails an agency sends?
Often both of you: the UK regulator and the FTC say so in plain terms, and EU law bars hiding whose behalf an email is sent on. This is a summary of the regulators' pages and isn't legal advice; our guide to cold email law in the US, UK and EU has the full comparison.
- UK. The ICO's email marketing guidance (archived 12 October 2026) says PECR applies to anyone who sends or instigates marketing email. If you ask another organisation to send it, you may still be responsible as the instigator, and both parties are responsible for complying. Where personal information is used, you must have a contract with them.
- UK lists. The same page says that where a bought-in list is used for marketing that needs consent, the consent must name your organisation and cover email, or you must not send. That matters for sole traders and some partnerships, which PECR treats as individuals.
- EU. Article 13(4) of the ePrivacy Directive prohibits marketing email that disguises or conceals the identity of the sender on whose behalf it is sent. An agency writing for you can't hide that the email is from your company.
- US. The FTC's CAN-SPAM guide says both the company whose product is promoted and the company that sends the message may be held legally responsible.
So put three things in the contract: who the sender of record is, who keeps the opt-out list, and that opt-outs reach you and every future campaign.
How do you get agency quotes you can compare?
Send every agency the same brief and ask for the price in the same fields. Copy this, fill in the brackets and send it to three agencies this week:
When the replies arrive, put each one through the per-contact and per-hour arithmetic above. If they plan to send from your company's own domain, read our guide on cold email from your main domain or a secondary one before you agree.
Frequently asked questions
How much does a cold email marketing agency charge per month?
Of the agencies that publish prices, as of 4 November 2026 Modern Inbound starts at $599 a month plus $99 for mailboxes, OutreachBloom starts at $2,400 and Sopro at around £3,000. Some, Cleverly among them, show no price and ask you to book a call. Ask every agency to list mailboxes, domains and data separately so the totals compare.
Do cold email agencies guarantee meetings?
Some do not, and say so. Modern Inbound's pricing page states no guarantees and no refunds. Others tie part of the price to results: Cleverly lists a pay-per-lead plan, and CIENCE adds a bonus to its monthly fee once an SDR reaches 60% of a monthly target for held meetings. Whatever the model, get the definition of a lead or meeting in writing before you sign.
What is a cold outreach agency?
It is an agency that contacts new prospects for you on more than one channel, usually email plus LinkedIn, and sometimes phone. Sopro lists email and LinkedIn outreach, OutreachBloom sells LinkedIn outreach separately at $1,000 a month, and CIENCE's SDRs call, email and message. Ask which accounts send the messages and whose name they are in.
Is it cheaper to run cold email yourself?
Compare cash and time separately. In cash, doing it yourself means paying for mailboxes, domains, data and a sending tool, with no agency fee on top. In time, it adds up: five commenters in one thread we read put the point where outsourcing pays at 10 to 15 or more hours a week. Divide the agency fee by the hours it would free each month and compare that with what an hour of your selling time is worth.
Who should own the domains and mailboxes an agency uses?
You should, so the sending history and the replies stay with you if you leave. Modern Inbound, for one, says the mailboxes and domains are bought in the client's name, with their fees paid to the providers. Put ownership, the login details and the hand-over on exit into the contract, along with who keeps the opt-out list.
Sources
- Modern Inbound: Cold email agency pricing (checked 4 Nov 2026)
- OutreachBloom: Pricing (checked 4 Nov 2026)
- Sopro: Pricing (checked 4 Nov 2026)
- CIENCE: Pricing (checked 4 Nov 2026)
- Cleverly: Cold email outreach agency (checked 4 Nov 2026)
- r/EntrepreneurRideAlong: Cold email agency vs doing it yourself (Feb 2026) (checked 4 Nov 2026)
- r/EntrepreneurRideAlong: Founder journey, considering my first cold email agency (Jan 2026) (checked 4 Nov 2026)
- r/sales: Does cold calling/emailing as service work nowadays? (May 2026) (checked 4 Nov 2026)
- ICO: How do we comply with the PECR electronic mail marketing rules? (archived copy) (archived 12 Oct 2026, read 4 Nov 2026)
- EUR-Lex: Directive 2002/58/EC (ePrivacy), consolidated text (checked 4 Nov 2026)
- FTC: CAN-SPAM Act, A Compliance Guide for Business (checked 4 Nov 2026)