Agency Lead Generation Statistics 2027: How Agencies Win New Clients
By Tushar Dey
18 min read
Most agencies still win most of their clients through referrals, and most agency owners say their pipeline is not where it should be. This page collects the agency lead generation statistics that explain both facts: where clients actually come from, how well cold email and LinkedIn outreach perform, what a lead costs, and how much agencies spend to win new business.
We only used agency lead generation statistics we could trace to the organisation that ran the survey or analysed the data, with the sample and year for each. Several are vendor datasets (outreach tools reporting on their own users), and we flag that. Anything we couldn’t confirm at the original source was left out.
Last updated: November 2026.
Key agency lead generation statistics (quick list)
Short on time? These are the agency lead generation statistics we would put in front of any agency owner planning next year’s new business, each linked to the original source.
- 66% of digital agencies say existing and past clients are their top source of new business referrals (SparkToro and Paddy Moogan, 2024).
- 75% of marketing and professional services firms cite referrals as their best lead source (RSW/US, 2025).
- Only 7% of those firms report strong and expanding pipelines (RSW/US, 2025).
- The share of clients who find new agencies through networking fell from 73% in 2022 to 58% in 2025 (RSW/US 2026 New Year Outlook).
- 59% of agencies have tried outbound sales, but only 9% of them call it very effective (SparkToro and Paddy Moogan, 2025).
- The average cold email reply rate across Instantly’s platform in 2025 was 3.43%; the top 10% of senders hit 10.7% or more (Instantly, 2026 benchmark report).
- Measured strictly as replies per email sent, Belkins saw a 0.45% reply rate across 7.5 million cold emails in 2025 (Belkins, 2026 study).
- LinkedIn connection requests are accepted 28.5% of the time, and 10.4% of follow-up messages get a reply (Expandi, 13.2 million requests, 2025–2026).
- Agency campaigns that add LinkedIn and phone calls to email book 21 meetings per 1,000 prospects, against 8 for email alone (SmartReach, 2026).
- The average agency invests 7% of revenue in sales and marketing, and referred clients stay about 1.9x longer than clients from other channels (Promethean Research).
Where agency clients come from: agency referral statistics
Referrals still win most new business
Every serious survey of agency owners agrees. In SparkToro and Paddy Moogan’s 2024 State of Digital Agencies survey of more than 600 agency owners and consultants, 66% named existing and past clients as their top source of referrals for new business. Nearly 13% said partner companies. Just over 6% said outbound.
The 2025 edition found the ranking unchanged, with partner referrals edging up to 15%. RSW/US, which surveys senior leaders at marketing and professional services firms, puts it even higher: 75% cite referrals as their best lead source in its September 2025 report.
Promethean Research, which tracks more than 200,000 agencies and surveyed 1,452 agency leaders for its 2026 Digital Agency Industry Report, says plainly that most agencies “still generate the bulk of their leads and revenue through referrals.”
The referral pool is shrinking on the buyer side
The catch: fewer buyers are asking for referrals. RSW/US’s 2026 New Year Outlook asked clients how they learn about new agencies, and every relationship-based channel dropped sharply between 2022 and 2025.
| How clients learn about new agencies | 2022 | 2025 | Change |
|---|---|---|---|
| Networking | 73% | 58% | -15 pts |
| Past relationships | 67% | 48% | -19 pts |
| Friends or co-workers | 60% | 35% | -25 pts |
The trend isn’t new. Hinge Research Institute’s Inside the Buyer’s Brain study (1,475 professional services buyers, 2018) found that over 70% of buyers turned to their network for a new provider in 2013, but fewer than 60% asked for referrals five years later. Nearly 1 in 5 already used search engines to find providers.
Hinge also found that buyers’ top selection criteria had shifted to relevant experience and expertise. Clutch’s survey of 312 US buyers of B2B services (fielded late 2022 to early 2023) points the same way: 29% ranked “understanding our specific business needs” as the biggest deciding factor, and 28% ranked the provider’s ability to deliver the service.
Referred clients are worth more
Referrals also produce better clients. Promethean’s Digital Agency Growth Guide reports that referred clients stay about 1.9 times longer than clients won through events, networking or outbound. In its effectiveness scoring, client referrals and growing current accounts were the only two tactics that scored above the midpoint at every level of sales complexity. Account management and client referrals sat at the top overall, with partner referrals, upselling and cross-selling making up the rest of the top five.
Notice that four of those five tactics depend on clients you already have. The cheapest new business most agencies will ever win is the second project from a current client, or the introduction that client makes after a good quarter.
So keep relying on referrals, but run them on purpose. The passive version (waiting for the phone to ring) gets weaker every year, and Hinge measured a 25% drop in the average professional services firm’s visibility over the five years to 2018, so being known by fewer people is a real risk even for good firms. If client lifetime is your weak spot, our agency client retention statistics cover churn and tenure in more detail.
Agency new business and sales pipeline statistics
If referrals were enough, pipelines would be healthy. They aren’t. In the SparkToro 2025 survey, only 14% of agencies said their current pipeline was healthy, and one in four said it had got worse over the previous year.
RSW/US found a similar picture across marketing and professional services firms in September 2025:
Source: RSW/US, Rolling Toward 2026 survey report (September 2025). Remaining respondents not broken out in the release.
Put the referral and pipeline numbers side by side and the problem is obvious. Agencies lean on a channel they don’t control, so the pipeline swings with whoever happens to mention your name this quarter. Fewer than one firm in ten in the RSW/US data, and about one agency in seven in SparkToro’s, is happy with what’s coming in.
One related finding from the same RSW/US report: 62% of firms productize services, and 86% plan to do more of it. That matters for new business. A fixed-scope, fixed-price offer is easier to pitch cold, easier for a client to pass on (“they do a $5,000 tracking audit”) and quicker to approve than a custom retainer.
Outbound and cold email statistics for agencies
Does outbound work for agencies?
In the SparkToro 2025 survey, 59% of agencies had tried outbound sales. This is how those agencies rated it:
Source: SparkToro and Paddy Moogan, State of Digital Agencies 2025. Base: agencies that had tried outbound.
Two-thirds got at least some results. A third got nothing. In our experience reviewing agencies, the difference is usually list quality and positioning, not the tool. A generalist emailing everyone has little to say; a specialist with a narrow list and a sharp offer has a lot.
Cold email reply rate benchmarks
Cold email benchmarks disagree wildly because they measure different things. Some divide replies by emails sent, others by contacts. Here are the three large 2025–2026 datasets we trust most.
| Dataset | Sample | Average reply rate | What it measures |
|---|---|---|---|
| Belkins (2025 data) | 7,530,489 emails | 0.45% | Unique replies per email sent; auto-replies and bounces excluded |
| Instantly (Jan–Dec 2025) | Thousands of workspaces | 3.43% (top 25%: 5.5%+; top 10%: 10.7%+) | Platform-wide reply rate across users’ campaigns |
| SmartReach (Jan–Jun 2026) | 40M+ emails, 400+ accounts | ~5% overall; ~10% for agency accounts | Reply rate by campaign; agency cohort of 100+ agencies |
Belkins’ number looks tiny because every email in a sequence counts in the denominator: one reply from 100 people on a five-step sequence shows as 0.2%, not 1%. Instantly doesn’t spell out its formula, but its tiers sit much closer to what most owners mean by “reply rate”: the share of people contacted who wrote back.
SmartReach’s agency cohort is the most relevant here. Agency campaigns averaged about 10% replies, against roughly 5% across all accounts. In professional services specifically, agencies running campaigns got 10.5% against 6.0% for in-house teams. But the funnel narrows fast: about 2.2% positive replies, 1.2% meetings and 0.6% opportunities.
Turn that into a planning number. Per 1,000 well-targeted prospects, expect somewhere between 8 meetings (SmartReach’s email-only figure, below) and 12 (its funnel rate), and about half that many real opportunities. If you need two new clients a quarter and close one opportunity in three, you need around six opportunities, which means roughly 1,000 to 1,500 tightly chosen prospects a quarter on email alone. Most small agencies don’t have that many good-fit targets, which is the real argument for adding other channels.
If you’d rather hand this to a specialist, our ranking of the best cold email agencies covers firms that run it as a service. If you’re running it in-house, compare sending platforms in our cold email software for agencies guide.
Who actually replies to cold email
Belkins broke its 2025 reply data down by the recipient’s seniority and company size. The pattern is consistent: smaller companies and owner-level contacts reply most.
Source: Belkins, B2B cold email response rates (2026 study), n=7,530,489 emails, January–December 2025.
Good news for most agencies: small businesses, where the owner hires the agency, reply most. Enterprise contacts reply at under a third of that rate. Belkins also saw replies slide from 0.50% in the first half of 2025 to 0.40% in the second.
Follow-ups: where the meetings come from
The two big datasets disagree on where replies come from, which is useful in itself. Instantly found that 58% of replies come from the first email and 42% from follow-ups, and it recommends 4–7 touchpoints spaced three to four days apart. Belkins’ follow-up study of its 2025 campaigns found the reverse: step one had the highest reply rate of any single email (0.59%), yet steps two to six together produced 58.6% of all replies.
Meetings tell a sharper story. In Belkins’ data the third email alone produced 35.6% of email-sourced meetings, the most of any step, and steps three to five together produced 53.5%. Beyond step five, volume falls sharply; step six replied at 0.28%.
Our reading: send at least three emails and no more than five, and save your strongest proof (a named case study, a specific result for a similar client) for the third. People who reply to email one are often curious; people who reply to email three have usually read enough to want a call.
LinkedIn outreach benchmarks for agencies
LinkedIn is the other main outbound channel agencies use. Expandi published benchmarks from 13,218,869 connection requests sent through 13,302 LinkedIn accounts between May 2025 and April 2026, including a breakout for marketing and advertising senders.
| Metric | All senders | Marketing & advertising senders |
|---|---|---|
| Connection request acceptance rate | 28.5% | 29.4% |
| Reply rate to the connection note | 3.0% | 2.4% |
| Reply rate to follow-up messages | 10.4% | 10.6% |
About three in ten accept, and one in ten of those reply to a message. The connection note is losing power: Expandi’s note reply rate fell from 3.5% in May 2025 to 2.2% in April 2026, while message reply rates held steady at 10–11%.
Belkins’ 2025 LinkedIn data (112,005 invite-based sequences) shows the trade-off. Adding an intro message lowered acceptance from 27.56% to 25.31% but raised replies among accepters from 5.28% to 8.18%. Do the multiplication and the note wins clearly: per 100 invites, about 1.5 replies without a note and about 2.1 with one, roughly 40% more conversations. For an agency selling a considered service, fewer connections and more replies is the better trade.
One awkward detail for agencies: marketing and advertising senders in Expandi’s data got slightly better acceptance than average (29.4%) but worse replies to the connection note (2.4% against 3.0%). Prospects can spot an agency pitch in a couple of lines. Keep the note about them, and save the offer for the message after they accept.
Multichannel outreach statistics
The strongest single finding in the outbound data is that channels stack. SmartReach measured meetings booked per 1,000 prospects in its agency campaigns. Adding LinkedIn to email lifted meetings by 75%, and adding calls on top took the total to 2.6 times the email-only figure.
Source: SmartReach, State of Cold Email (January–June 2026), 100+ agency accounts within a 400+ account dataset.
Belkins’ outreach data backs up the case for phone calls. Cold calls connected with 18.6% of reached prospects, compared with 5.04% on LinkedIn and 0.45% on email, and calls produced 33.6% of booked appointments (email produced 50%, leaving LinkedIn around 16%). That calling data comes from 46,000+ call records across eight client projects, so it’s a smaller base than the email numbers. Many agency owners hate calling, but it’s the cheapest way to add meetings from a list you already have: the contacts are already researched, and a call to someone who opened your third email is barely cold.
Good data makes all of this work. If your list is the bottleneck, see our guides to B2B data providers and the best lead generation agencies that build and work lists for you.
Agency cost per lead and client acquisition cost
Cost is the weakest area in public agency lead generation statistics: no one publishes a clean agency-only cost per lead benchmark. The closest public data is First Page Sage’s 2026 cost per lead study (published October 2026, lead data from January 2022 to August 2026, 30 industries in six sectors). It defines a lead as a direct connection with an interested prospect, by email, phone or in person. Its blended average rose 2.2% on the previous edition.
| Segment | Paid CPL | Organic CPL | Blended CPL |
|---|---|---|---|
| All industries (average) | $452 | $350 | $400 |
| Financial & professional services sector | $592 | $515 | $554 |
| B2B SaaS | $318 | $186 | $249 |
On the spending side, Promethean found that the average agency invests 7% of revenue in sales and marketing, and sales and marketing roles make up roughly 7% of headcount. Its worked example: a $2 million agency spending 7% wins about 11 clients a year at a client acquisition cost near $12,500, against a lifetime value near $45,000, a 3.6:1 ratio. Promethean treats anything above 3:1 as healthy, 7:1 or more as optimised, and below 1:1 as losing money on every client.
Lifetime value is the shaky input. Promethean also reports that 42% of agencies have an average retainer tenure above two years, while about a quarter of engagements end within the first year. If your clients sit in that second group, your real lifetime value is probably well below the $45,000 example, and the budget you can justify shrinks with it.
Retainer pricing changes this maths a lot, so pair it with our agency pricing statistics.
How agencies market themselves
Beyond referrals and outbound, agencies mostly market themselves with the inbound tactics they sell. Databox and Harness & Hone surveyed 87 marketing agencies in late 2023 about the channels they use for their own growth:
Source: Databox with Harness & Hone (October–November 2023), n=87 agencies.
Usage isn’t effectiveness. The same agencies ranked client referrals as most effective and SEO second. Promethean says reach-based channels (outbound, content, SEO, paid) have degraded while trust-based ones (referrals, account management, live events) have held up, and in SparkToro’s 2025 data speaking at events jumped from sixth to fourth as a source of new business.
One more number to keep content and brand work in perspective. LinkedIn’s B2B Institute, whose buyer research draws on work with the Ehrenberg-Bass Institute, estimates that 95% of potential B2B buyers are not in the market at any given time. Content rarely produces a lead next week; it makes you the agency buyers remember when they enter the market. Directory profiles (including a MakeSuccessOnline listing) catch them the moment they start looking.
RFPs, win rates and sales cycles
This is where agency lead generation statistics get thinnest. We found no recent agency-specific benchmark for sales cycle length or proposal win rates from a source that publishes its method, so we won’t invent one.
For formal RFPs across all industries, Loopio’s 2026 RFP Response Trends & Benchmarks report (1,500+ response teams) says teams spend an average of 33 hours on each RFP (down from 35), respond to 166 a year (up from 153), and win 45% on its headline average of 2019–2026 data. The same page also quotes a 39% average, and North American teams dipped to 37%, so treat 40% as a fair middle. Loopio sells RFP software and surveys high-volume bidders, which skews the sample toward larger firms.
The useful number is the time. Even Loopio’s small-business segment spends 27 hours per response. At $100 an hour of internal time, that’s $2,700 to $3,300 per bid, and at a 40% win rate each won RFP has cost you about $6,750 to $8,250 in unbilled hours. Loopio’s respondents are dedicated bid teams answering 166 RFPs a year. A small agency answering a handful, with no relationship with the buyer and no directly relevant case study, should expect to do worse than those averages, and should usually pass.
On sales cycles, Promethean’s research is the most useful framing. It scores “sales complexity” as sales cycle length in months multiplied by the number of meetings needed to close, and finds that in high-complexity sales only three tactics worked: growing current accounts, client referrals and partner referrals. The longer and more complex your sale, the more your pipeline depends on trust you’ve already built.
How to read these agency lead generation statistics
Most agency lead generation statistics come from small owner surveys or from vendors reporting on their own users. Neither is useless, but each needs a little context before you plan around it.
- Check the denominator. A 0.45% and a 10% cold email reply rate can describe similar campaigns measured differently. Compare your numbers only to a benchmark that uses the same formula.
- “Top source” is not “share of clients.” 66% of agencies naming referrals as their top source does not mean 66% of clients come from referrals. No public study we found reports that share reliably.
- Mind the year. Hinge’s data is from 2018 and Databox’s from 2023; nothing newer covers the same questions.
- Agency size matters. Promethean reports that 87% of North American agencies have fewer than 50 full-time staff. Benchmarks built on larger sales teams, such as Loopio’s RFP data, don’t map cleanly onto a 10-person shop.
What we would do with this data
If we were planning a small agency’s new business for 2027, these agency lead generation statistics would push us toward five moves.
- Turn referrals into a process. Ask happy clients at set points (after a win, at renewal), and build two or three partner relationships with non-competing agencies or software vendors. Partner referrals are already the top source for 15% of agencies.
- Add one outbound channel you control. A narrow list of owner-led companies, a three-to-five step email sequence, and LinkedIn messages to the same people. Track positive replies and meetings.
- Pick up the phone. Calls connected far more often than email in Belkins’ data and produced a third of appointments.
- Budget from lifetime value. If you spend less than 7% of revenue on growth, you’re below the average agency in Promethean’s data. Work out what a client is worth and what you can afford to spend to win one.
- Be easy to find. Fewer buyers ask friends. Keep your site, case studies and directory profiles current, and log where each lead found you in a CRM built for agencies.
AI is also changing how agencies prospect: RSW/US found that 77% of firms already use AI for business development and 80% plan to expand that use. Our AI in marketing agencies statistics page covers that shift in detail.
FAQ
What percentage of agency clients come from referrals?
No reliable public study reports the exact share of clients. What surveys do show is that referrals are the top source for most agencies: 66% of digital agencies named existing and past clients as their top referral source (SparkToro, 2024), and 75% of marketing and professional services firms call referrals their best lead source (RSW/US, 2025).
What is a good cold email reply rate for an agency?
Across Instantly’s platform, the 2025 average was 3.43%, the top quarter of senders reached 5.5% and the top 10% passed 10.7%. SmartReach’s agency campaigns averaged around 10%, with about 2.2% positive replies. If you measure replies per email sent, Belkins’ 0.45% average is the comparison.
How do most marketing agencies get new clients?
Mainly client and partner referrals, then SEO and content, events and outbound. Only about 6% named outbound as their top source in SparkToro’s 2024 survey, though 59% had tried it by 2025.
What is the average LinkedIn connection acceptance rate?
About 28.5% across 13.2 million connection requests in Expandi’s May 2025 to April 2026 data, and 29.4% for marketing and advertising senders. Around 10.4% of follow-up messages to accepted connections got a reply.
How much should an agency spend on lead generation?
The average agency invests about 7% of revenue in sales and marketing (Promethean Research). Better: work back from client lifetime value, aiming for a lifetime value to acquisition cost ratio above 3:1.
What is the average cost per lead for a marketing agency?
There’s no agency-specific benchmark. First Page Sage’s 2026 study puts the cross-industry blended cost per lead at $400 ($452 paid, $350 organic), and $554 for its financial and professional services sector, which is the closest match for a high-ticket service sale.
Sources
Every one of the agency lead generation statistics above comes from the sources below. Where we could only read a publisher’s summary or press release, as with the RSW/US reports, we link that page.
- SparkToro and Paddy Moogan: The State of Digital Agencies in 2024, client referrals and sales pipelines (600+ agency owners and consultants)
- SparkToro and Paddy Moogan: Digital agency new business still a concern, referrals still rule (2025 survey)
- RSW/US: Rolling Toward 2026 survey report (September 2025), via Agility PR
- RSW/US: 2026 New Year Outlook Report (January 2026), via Agility PR
- Promethean Research: Digital Agency Growth Guide
- Promethean Research: 2026 Digital Agency Industry Report (1,452 agency leaders, 3,172 employees)
- Hinge Research Institute: Inside the Buyer’s Brain, second edition (2018) (1,475 buyers, 3,005 sellers)
- Clutch: B2B buyer survey (312 US buyers, 2022–2023)
- Instantly: Cold Email Benchmark Report 2026 (2025 platform data)
- Belkins: What are B2B cold email response rates? (2026 study) (7,530,489 emails, 2025)
- Belkins: Sales follow-up statistics in B2B (email, LinkedIn and calling data, 2025)
- SmartReach: State of Cold Email 2026 (40M+ emails, January–June 2026)
- Expandi: LinkedIn outreach benchmarks (13.2M connection requests, May 2025–April 2026)
- First Page Sage: Average Cost Per Lead by Industry 2026
- Databox: Agency client acquisition strategies survey (87 agencies, 2023)
- LinkedIn B2B Institute: The 95-5 rule (with the Ehrenberg-Bass Institute)
- Loopio: RFP Response Trends & Benchmarks 2026 (1,500+ teams)
