Define your agency ICP by capability gap, not size
The target here is other agencies and consultancies, not brands. Look for agencies with a clear capability gap next to your own specialty: a branding studio with no paid media arm, a web development shop with no SEO capability, a PR firm with no email or lifecycle offering.
Target titles: Founder, Agency Owner, Managing Director, VP Client Services. Company size matters less here than the capability gap itself; a five-person boutique and a forty-person agency can both be a fit if they're missing the exact service you provide.
Spend time upfront listing which agency types plausibly need your specialty. A precise list of twenty agency categories will outperform a broad "all agencies" target, and it also makes the research and personalization work better in the next step.
It's worth separating agencies that occasionally get asked for your service from agencies that clearly never offer it. The first group is a stronger initial target, since the demand is already proven; the second group may still be a fit, but the pitch there leans more on opportunity than on a known, recurring client request.
Source leads with AI Leads targeting agency owners
Describe the target in AI Leads: agency type, rough size, and the founder or owner titles from step one. AI Leads finds and enriches matching prospects, with the quality funnel screening weak matches before they use credits.
If you have a hand-built list from an agency directory or a past conference, import it as a CSV instead. This is a smaller, more specialized outreach motion, so a curated list often beats a broad AI-sourced one, especially once you know which agency categories reply best.

Let research confirm the capability gap before you write
Contact research runs automatically before drafting, and the transparency view shows what it found on each agency and person: company facts, role, and signals, along with what was actually used in the email. For this playbook, that research should be surfacing what services the target agency lists, which is what lets your email reference the specific gap rather than guessing at it.
Review research quality on a handful of contacts before the campaign goes live. An agency's own site usually states its services clearly, so research here tends to be reliable, and a thin research result is a good sign the agency doesn't clearly fit your ICP.
Pay attention to whether the research surfaces recent agency growth, for example new team hires or a rebrand, alongside the capability gap. An agency that's actively expanding is often a better first outreach target than one that looks stable and unchanged, since expansion tends to come with new client demand for services it doesn't yet offer.
Set the campaign goal and describe the white-label offer
Set the goal to book a meeting, since a white-label relationship is a longer conversation than a single reply. Campaign guidance walks through Describe, Teach, and Practice.
In Describe, be explicit about the arrangement: what you deliver, whether you work under their brand, and what the handoff looks like. Agencies are wary of vague partnership language, so specificity here builds more trust than a warm tone does. Include how communication works day to day, since that detail is often the first question a prospective partner will ask.
Use Practice to check that the arrangement details you wrote in Describe are actually coming through in the draft emails, not just the general offer of a partnership. A prospective partner reading a vague email will assume the arrangement is vague too.

Teach the AI to position as invisible capacity, not a competitor
Paste sample emails that make clear you're not pitching their clients directly and that the work stays under their name. This reassurance needs to show up early in the email, not buried at the end.
Subject: paid media capacity for Ridge Creative
Hi Tom,
Ridge's site work is sharp, but I didn't see paid media listed as a service. A few clients probably ask for it anyway.
We run paid social and search as a white-label partner, fully under your brand, no client contact on our end. A couple of studio partners use us this way when a client wants it but it's not core to what they do.
Open to a short call to see if it's a fit?
RezaNotice the email states "no client contact on our end" directly. That single line addresses the objection before it gets raised, and it's worth keeping that kind of reassurance in every sample you teach the AI for this campaign.
Build a sequence with a low-commitment first ask
Sequences send follow-ups on a delay and stop automatically once someone replies. For agency-to-agency outreach, keep the first ask small, for example offering to send a one-page overview of how the partnership works, rather than asking for a call outright.
Three touches over one to two weeks tends to fit this motion. Later touches can reference a specific service gap or a relevant example rather than repeating the same offer, and spacing them out gives a busy agency owner enough room to actually consider the offer between emails.
Agency owners tend to move slower on partnership decisions than brands move on a single vendor, since a white-label partner becomes part of their delivery process. Don't read a slow reply as disinterest; a longer gap between touches is often appropriate here compared to a typical brand-facing sequence.

Handle the objections specific to white-label work
AI reply handling reads the actual content of a reply, so "we don't white-label" or "our clients would find out" get answered directly instead of with a generic response. Review a sample of these replies as they come in, since the right answer here is usually procedural: how the handoff works, what stays confidential, and what the client actually sees.
"We don't white-label" is often really "we haven't found a partner we trust," and the reply worth sending addresses trust and process, not just repeats the pitch. Offering a small, low-risk first project is often a better next step than pushing straight to a formal partnership call.
Watch for a third common reply too: interest, but no current client that needs the service. Keep that thread open rather than closing it, since the value of a white-label partner is that they're ready the next time a client asks, and agencies remember who reached out first.
Track metrics for a saturated market and refine your niche
Agency-to-agency outreach is a saturated market: expect roughly 1 to 3 percent reply rates and 0.3 to 1 percent meeting rates. Check per-step performance in analytics to see which touch is converting.
If one agency category, say branding studios, replies at a noticeably higher rate than another, narrow future AI Leads batches toward that category instead of spreading evenly across all of them. Over a few campaigns, this kind of narrowing tends to matter more to reply rate than any single line in the email.
Once a handful of white-label partnerships are running, treat those relationships as their own referral source. Agency owners who trust one partner tend to know others in similar situations, and a warm introduction from an existing partner will outperform any cold email in this playbook.

Consejos de experto
Name the confidentiality piece early
Agencies worry about client exposure before anything else. Address it in the first email rather than waiting for the objection to come up.
Offer a written overview before a call
A one-page explanation of how the handoff works is a lower-commitment ask than a meeting and moves cautious agency owners forward faster than pushing straight for time on their calendar.
Target by capability gap, not by agency size
A small boutique with a real gap replies more often than a large agency with no obvious need, even though the larger one looks like a bigger opportunity on paper. Prioritize the gap over the headcount when the two point in different directions.