About port25.ai
We are deliverability specialists who happen to write great email.
Most email agencies focus on design. We focus on what actually drives revenue — inbox placement, send timing, sequence logic, and copy that converts. The design follows from there.
Who we are
A team built around one channel, done properly.
Port25.ai is a specialist email remarketing agency. We don’t do paid social, SEO, or brand strategy. We do one thing — email remarketing — and we do it at a level that generalist agencies simply can’t match.
Our team combines copywriters, deliverability engineers, and automation specialists. Each person on a campaign is a specialist in their role — not a generalist account manager trying to do everything.
The name is a nod to our roots. Port 25 is the SMTP port — the technical entry point for email delivery. We live at that layer of the stack, and it shows in our results.
Our approach
We think about email differently.
Most agencies treat email as a broadcast channel. We treat it as a conversation — one that needs to be timed, targeted, and written with precision.
Deliverability first
Beautiful emails that land in spam are worthless. We engineer for inbox placement before we think about design — SPF, DKIM, DMARC, list hygiene, send cadence. All of it.
Behaviour-driven sequences
We build flows that respond to what your customers actually do — not blasts that go to everyone. The right message reaches the right person at the right moment.
Revenue as the metric
Open rates are vanity. We track recovered revenue, conversion rate, and ROI per flow. Those are the numbers that determine whether we’re doing our job.
Copy that earns attention
We write emails people actually read. No generic templates, no filler. Every sequence is written specifically for your brand voice, your audience, and the action you need them to take.
Fast to launch
We move quickly without cutting corners. Most clients have their first flow live within 48 hours of kickoff. Speed matters when revenue is sitting on the table uncaptured.
Long-term list health
We protect your sender reputation as carefully as we chase revenue. Suppression logic, sunset paths, and bounce handling are built into every flow from day one.
Who we work with
The right fit for email remarketing.
We work best with businesses that have an existing email list, a real product, and a genuine interest in doing email properly.
E-commerce brands
DTC and marketplace sellers with browse, cart, and post-purchase data to act on. If you’re selling products online, remarketing email is your highest-ROI channel.
B2B companies
SaaS, professional services, and B2B brands with longer sales cycles. We build re-engagement sequences that keep warm leads moving without burning your list.
Small businesses
Local and independent businesses ready to use email seriously for the first time. We handle the technical complexity so you can focus on running your business.
Want to see how we think?
Get a free audit of your email setup. We’ll show you exactly what we’d fix, build, and prioritise — no obligation, no pitch.