Customer.io Certified Partner

Your dedicated email marketing agency—powered by Customer.io expertise.

You've got the product. You've got the customers. What you don't have is the time (or the team) to build the email marketing engine your business deserves.

That's where NerveCentral comes in.

We're a specialist email marketing agency built around one platform: Customer.io. We don't dabble in a dozen tools. We go deep on one—so you get the kind of results that only come from genuine expertise.

Book a free consultation →Or send us a message.

Why hire an agency instead of doing it in-house?

Let's be honest. Email marketing isn't hard to start. It's hard to do well.

Building automated campaigns, writing copy that converts, designing emails that render perfectly on every device, making sense of your data, keeping deliverability healthy—it adds up fast. And most in-house teams are already stretched thin.

Hiring a full-time email marketing team means salaries, benefits, training, and months of ramp-up time. Hiring us means you get a team of specialists who've already done this hundreds of times—ready to go from day one.

You get the output of an entire team for a fraction of the cost.

What you get when you work with us

Strategy & Planning

Every engagement starts with understanding your business—your customers, your goals, your data. We build a messaging strategy tailored to your specific situation. Not a template. Not a generic playbook. A plan built for you.

Campaign Creation & Management

From welcome sequences to winback campaigns, abandoned carts to upsell flows—we design, write, build, and launch the campaigns that drive revenue. Beautiful emails. Compelling copy. Smart automation logic. All handled.

Automation & Workflow Design

Customer.io's visual workflow builder is incredibly powerful—if you know how to use it. We build sophisticated, behavior-driven automations that send the right message at the right time. Onboarding sequences, re-engagement flows, lifecycle campaigns—the works.

Deliverability & Technical Setup

Your emails can't convert if they don't land in the inbox. We handle domain authentication (SPF, DKIM, DMARC), monitor sender reputation, manage IP warming, and keep your deliverability healthy so your messages actually get seen.

Reporting & Optimization

56% of marketing teams struggle with reporting and attribution. We don't just send campaigns and walk away. We track performance, analyze the data, run A/B tests, and continuously optimize. Every month, you'll know exactly what's working and what we're improving.

Data & Integration Support

Your data is the foundation of everything. We help connect your tools, clean up your events and attributes, build meaningful segments, and make sure Customer.io is getting the data it needs to power personalized, relevant messaging.

Why NerveCentral? Why not a bigger agency?

Good question. Here's the honest answer:

We're specialists, not generalists. We don't offer SEO, PPC, social media, or "full-service digital marketing." We do one thing—email marketing and customer engagement through Customer.io—and we do it exceptionally well.

You won't be passed to a junior account manager. When you work with NerveCentral, you work directly with senior people who actually know the platform inside and out. No layers. No runaround.

We're a certified Customer.io partner. That's not a badge we bought. It means Customer.io trusts us to deliver results for their clients. We know every feature, every quirk, every workaround.

We care about outcomes, not billable hours. Our goal is to deliver quantifiable results that increase your profits. No fluff. No vanity metrics. Just real revenue you can take to the bank.

The kinds of businesses we work with

We work with growing companies across SaaS, health & wellness, fintech, e-commerce, and more. If you're using Customer.io (or thinking about it), and you want to:

Then we're probably a good fit.

How it works

Step 1: We Listen

Book a free consultation. Tell us about your business, your customers, and your goals. No pitch decks, no pressure—just a conversation.

Step 2: We Audit

We dig into your current Customer.io setup. What's working? What's broken? Where are the quick wins? We find them all and put together a clear plan of action.

Step 3: We Build

Custom strategies. Beautiful campaigns. Smart automations. Built specifically for your business—and managed end-to-end by our team.

Step 4: We Measure & Optimize

What gets measured gets improved. We track everything, report on what matters, and keep optimizing until the numbers speak for themselves.

Nice things people have said about us ...

Stop Searching. Hire NerveCentral.

Our company needed a strategic partner to help us build out our Customer.io profile, campaigns, and segmentation. We have been impressed with David and NerveCentral's ability to digest the information we throw at them, keep everything organized, and drive implementation and progress. We would recommend NerveCentral to anyone who needs a trusted and strategic partner to get up and running with Customer.io.

Everett Wolf
CEU Matrix

NerveCentral did a fantastic job in building out my email automation, perfectly worded emails triggered at the right time in the customers' journey. We have seen open rates between 55-70% with click-through rates of up to 20% which are astonishing figures.

George Taylor
Frive

Expertise in Customer.io

NerveCentral's help in migrating emails out of our internal system and into Customer.io has been invaluable. Their advice and guidance on best practices for event data was very helpful to our engineering team. Additionally, their knowledge about Customer.io specifically has been crucial as we were setting up all our email flows. NerveCentral is a pleasure to work with and we highly recommend their services!

Pooja Pradhan
AIRE Health

Excellent work from the team at NerveCentral

David is very professional and good at what he does. I'd recommend him for setting up email sequences for Customer.io. His delivery was on schedule, and all feedback provided was taken on board and incorporated.

Tayo Ademolu
Translayte

Just wanted to say thank you for your help and output during Black Friday week. I appreciated your independence, alacrity, efficiency, and overall executional excellence. Looking forward to our continued collaboration!

Robert Brotherton
Plus Body by Julia Haart

Dynamic and Adaptable to our Moving Goal

We came to NerveCentral with a brief that ended up changing many times on short notice - David was flexible and experienced in dealing with all the moving parts and helping us focus in on what was needed. Great communication through loom videos and managing our different timezones. Really grateful for his guidance in getting everything set up and rolling with everything we threw at him!

Kevin Rassool
High Impact Athletes

This is my second time hiring NerveCentral, the first being for an email drip campaign. Both times, they have delivered top-notch work in a collaborative environment. They established clear expectations for our work together and make the process of requesting revisions very easy. Will definitely be hiring NerveCentral again as my business grows!

Jared Judge
Dream City Music

Marketing Campaigns Made Easy by NerveCentral

It's been a pleasure working with David. David's knowledge of Customer.io has been invaluable to us at AIRE and his ability and willingness to keep up with the dynamic nature of a startup is highly appreciated.

Aastha Sharma
AIRE Health

Great Experience

We've had a great experience with David and look forward to working with him in the future. He has delivered all tasks as asked at a very professional level. It is really nice working with him because he has both technical expertise in customer.io and a marketing mindset.

MacGregor Lennarz
Gyna

NerveCentral did an exceptional job on our drip campaign. Not only did they write amazing copy, they also implemented the mechanics of the drip campaign for us. I would recommend NerveCentral to anyone looking to set up an automated marketing lead strategy/campaign.

Tem Balanco
BuildYourSite

NerveCentral's genuine care for our success has been refreshing

We're grateful for the support we've received from NerveCentral in setting up our Customer.io account and our first workflow—they made the entire process incredibly smooth and manageable. What's more, their advice on best practices has been extremely valuable. Their professionalism, knowledge, and genuine care for our success has been refreshing. We highly recommend their services.

Greg Pfister
KaiRise

CIO Expert setup

NerveCentral supported us in setting up our emails through Customer.IO and made the process smooth and hassle-free.

Adnan Riaz
AIRE Health

I worked with NerveCentral using email and specific landing pages for user acquisition. NerveCentral was extremely creative and suggested strategies that ran contrary to norms in the design of emails, the amount of information conveyed and the time and day the message was sent. They understood the degree of explanation required to create trust and tested iterations across multiple times and days. As a result of their work, we created a mix of long and short-form emails sent at different times to optimize open and click-through rates. I appreciate their help and continued insight.

Tony Maull
Save Big Bread

David exhibits a very deep and clear understanding of Customer.io

David was very competitively priced, asked all the right questions, was very clear in his communications and completed the requested tasks very skillfully.

Charles Vamadeva
Media Marketing Consultants LLC

The folks at NerveCentral are incredibly intelligent and can handle some of the most complex marketing automation requirements. We hired them to come up with a blueprint for our automation requirements and they fulfilled without a hiccup.

Jeev Trika
Crowd Reviews

David was easy to work with. He communicated proactively regarding progress, and he recorded a video on how to adjust the campaign if needed. He was also responsive to our questions about the email campaign after the project was finished.

Alyona Waltl
Software Defined Automation

Working with NerveCentral on our email campaigns was a real pleasure. It was a relief to hand over the reigns to them, as we just weren’t getting around to creating any emails ourselves due to lack of time. And I’m glad we did, because they did a far better job of it than we could have. The additional revenue they’ve generated for us is over 10x our investment—we couldn’t be more pleased.

Artem K
Slimfy

Ready to hand your email marketing to the experts?

David Crowther
Book a free consultation →

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.