For agencies
We partner with digital, performance and demand gen agencies as a fully white-label email and marketing automation resource. You bring the client relationship, we deliver the work under your brand — using AI-assisted workflows that make us faster than any traditional consultant.
Why agencies work with us
Whether it's a platform migration, a deliverability crisis, or building automation from scratch — email work often falls outside what your team does day to day. We slot in as your specialist resource.
We're senior practitioners, not juniors learning on your client's account. We know the platforms, we know the gotchas, and we can hit the ground running without a lengthy onboarding.
The agencies we work best with bring us in repeatedly as their email arm. We're flexible on how we engage — project, retainer, or ad hoc — and we work the way you work.
What we cover
If your client needs it, we can probably do it.
Programme strategy, lifecycle design, copywriting, segmentation, A/B testing.
Nurture flows, onboarding sequences, re-engagement, cross-channel journeys.
Authentication, sender reputation, list hygiene, blocklist recovery.
Platform evaluation, RFP management, migration planning and execution.
CRM configuration, data flows, integrations, governance and attribution.
Flexible ongoing resource — weekly, monthly, or on-demand as you need us.
Why us
We're not generalist marketing consultants who do a bit of email. Metal Jelly is a two-person specialist practice — 15+ years of combined experience across email marketing, CRM, and marketing operations, in B2B and B2C.
One of us has spent years client-side at fintech and B2B SaaS companies. The other has worked inside an ESP — which means we understand deliverability and platform behaviour at a technical depth most practitioners don't.
We use AI tooling we've built ourselves to accelerate delivery — campaign briefs, email sequences, nurture flows, and personalisation logic in 48 hours, not two weeks. Senior-reviewed at every stage. Faster turnaround, no compromise on quality.
We're platform-agnostic, senior-only, and easy to work with. No account managers, no junior handoffs. When you brief us, you get us.
Years combined experience
Depth on both sides of the market
Inside knowledge from the platform side
First draft turnaround — AI-assisted, senior-reviewed
Platforms
How it works
No complicated onboarding. No long-term lock-in. Just a working relationship that delivers for your clients.
Tell us about your client and what they need. We'll give you an honest view of whether and how we can help — no obligation, no overselling.
We work directly with your client or entirely behind the scenes — your call. All deliverables go out under your agency's brand. First drafts within 48 hours. Complete programmes in days.
We handle the work, you handle the relationship. Your client never knows we exist — they just see great email work delivered under your brand, on time.
Free consultation
Have a specific client brief in mind? Tell us about it. Or just tell us about your agency and what email work keeps coming up that you can't handle in-house. No hard sell — just a straight conversation about whether there's a fit.