You know you need someone owning your email marketing. Someone who gets Customer.io inside and out. Someone who can build the strategy, execute the campaigns, and actually move the numbers.
But hiring a full-time head of email marketing? That's a £80k–£120k commitment before you've even factored in benefits, tools, and training. And finding someone who genuinely knows Customer.io at an expert level? Good luck.
There's a smarter way.

A fractional email marketing manager is a senior-level specialist who embeds into your team on a part-time or retained basis. You get the strategic thinking, the hands-on execution, and the deep platform expertise—without the full-time salary.
Think of it as having a seasoned head of email marketing on your team, just without the overhead.
At NerveCentral, our fractional engagements are built specifically around Customer.io.
That means you're not getting a generalist who dabbles in a dozen platforms. You're getting a certified Customer.io partner who knows every feature, every workaround, and every best practice—because it's all we do.
This service is built for businesses that:
If any of that sounds familiar, we should talk.
We don't just press buttons. We take ownership of your email marketing strategy—setting goals, identifying opportunities, and building a roadmap that ties directly to revenue.
From welcome sequences and onboarding flows to win-back campaigns and promotional broadcasts—we plan, build, test, and launch everything inside Customer.io.
Customer.io's automation capabilities are incredibly powerful. Most businesses use about 10% of them. We'll build behaviour-driven workflows that respond to what your customers actually do—not what you hope they'll do.
We're not the type to set it and forget it. Every campaign gets measured, analysed, and improved. Subject lines, send times, segmentation, personalisation—we're constantly testing and refining.
No vanity metrics. No 47-page decks that nobody reads. You'll get clear, regular reports that show what's working, what's not, and what we're doing about it.
56% of marketing teams struggle with reporting and attribution. We'll clean up your data, build meaningful segments, and make sure Customer.io has everything it needs to deliver the right message to the right person.
1. We start with a conversation You tell us about your business, your customers, and what you're trying to achieve. No pitch decks, no pressure.
2. We audit your current setup We dig into your Customer.io account and assess what's working, what's broken, and where the quick wins are.
3. We agree on a plan Based on the audit, we'll propose a clear scope of work with priorities, deliverables, and timelines. You'll know exactly what you're getting.
4. We embed into your team We join your Slack, attend your standups (if you want us to), and operate as a seamless extension of your marketing team.
5. We execute and optimise—continuously Every month, we're building, testing, measuring, and improving. You'll always know what's happening and why.
We don't spread ourselves thin across fifteen platforms. Customer.io is our thing—and because we focus solely on it, we know the platform inside and out. That expertise is what gets you better results, faster.
We're not just experienced users—we're officially certified. That means direct access to Customer.io's team, early access to new features, and a depth of knowledge you won't find elsewhere.
From SaaS startups to established brands like Barclaycard, GSK, and BT—we've helped businesses across industries get serious results from their email marketing. Open rates of 55–70%. Click-through rates up to 20%. Revenue increases of 10x and beyond.
This isn't a factory. We're a small, focused team that gives every client the attention they deserve. When you work with us, you're speaking directly with senior people who know your account—not being passed down to a junior.
How many hours per week/month will you dedicate to us? That depends on your needs. Our fractional engagements are flexible—some clients need 10 hours a week, others need 20+ hours a month. We'll scope it properly during our initial consultation.
How is this different from hiring an agency? An agency typically works on projects with clear start and end dates. A fractional manager operates as part of your team on an ongoing basis—attending meetings, owning the roadmap, and being accountable for results over time.
Do you only work with Customer.io? Yes. We're specialists, not generalists. Customer.io is our sole focus, and that's exactly what makes us so effective with it.
Can we scale up or down? Absolutely. As your needs evolve, so can our engagement. Need more hours during a product launch? No problem. Want to scale back during quieter months? That works too.
What's the minimum commitment? We typically recommend a minimum of three months to allow enough time to audit, implement, and start seeing results. But we'll discuss what makes sense for your situation.

On our call, you'll be speaking with David Crowther, founder of NerveCentral.
Our initial consultation is not a sales call—you talk, we'll listen—then we'll come back to you within 48 hours with our best ideas on how to grow your business.