Retention Marketing Agency

If Your Revenue
Fluctuates Every Month —
It's Not Your Ads.

We turn your customer list into a predictable, compounding revenue engine. Results backed by a written satisfaction guarantee.

Book a Free Audit See How It Works
17–34%Additional revenue
from retention marketing
30–45%Email-attributed revenue
for our clients
45 DaysTo measurable results
from launch
100%Satisfaction guaranteed
or your money back
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What We Do

Everything You Need To
Turn Retention Into Revenue

Revenue Attribution

Capture More Revenue

34%

Of total revenue attributed to email — up from 9% in 60 days for a real client

Industry avg: 12–18%Keryx clients: 30–45%

Core Email Flows

Automations That Run 24/7

Welcome Series
Abandoned Checkout
Abandoned Site Browse
Post-Purchase (incl. Upsell)
Win-Back & Re-engagement

SMS Marketing

Multi-Channel Retention

Email and SMS working together dramatically outperforms either channel alone. We build coordinated sequences that reach your customer at the right moment — without overwhelming them or cannibalising your email list.

Satisfaction Guarantee

Results or Your Money Back

We stand behind our work with a written guarantee. If we don't deliver measurable improvements to your email revenue by the terms agreed in your contract, you get a full refund. No ambiguity, no fine print.

See What's Possible For Your Brand
From The Founders

The People Behind Your Growth

J

Most brands are sitting on 20–40% of untapped revenue. The ads are running, the product is good — but the email list is either silent or burning out subscribers with discount blasts. We come in, rebuild the system from the ground up, and turn that list into your most predictable revenue channel.

Jaskaran Singh

Co-Founder, Keryx

M

Email is the only channel you actually own. Social can disappear overnight. Ad costs keep rising. Your list is an asset that compounds. We've seen brands double their email attributed revenue in under 60 days — not by emailing more, but by emailing smarter. That's what we build.

Maxwell Trappe

Co-Founder, Keryx

Our Process

The Keryx System™

Five phases. Every client. No shortcuts. Each letter of KERYX stands for a distinct phase of the system — not a mnemonic, but a map from first contact to compounding revenue.

K Know

Phase 01

Know Your Audience

We audit your full account, map your customer behaviour, and pinpoint exactly where revenue is leaking before we touch a single tool.

  • Full account audit
  • Deliverability check
  • Customer journey mapping
  • Revenue gap analysis
E Engineer

Phase 02

Engineer the Strategy

Flow logic, segmentation structure, send cadence, brand voice — the entire architecture is mapped and approved before a single email is built.

  • Flow map & blueprint
  • Segmentation strategy
  • Brand voice framework
  • Campaign calendar
R Reach

Phase 03

Reach the Inbox

Every core automation goes live — copy, design, logic, and timing — built to land in the primary inbox and convert from day one.

  • Welcome series
  • Abandoned checkout
  • Abandoned browse
  • Post-purchase & win-back
Y Yield

Phase 04

Yield the Data

Once live, we dissect the data — A/B tests, send-time analysis, revenue attribution per flow. Every decision is tied to a real number.

  • Subject line A/B testing
  • Send time optimisation
  • Revenue attribution per flow
  • List health monitoring
X Expand

Phase 05

Expand the Revenue

With the foundation performing, we go deeper. VIP sequences, advanced personalisation, list growth. The longer the Keryx System runs, the more it compounds.

  • VIP & loyalty sequences
  • Advanced personalisation
  • List growth acceleration
  • Quarterly scaling reviews
Start Your Keryx System Audit
Why We Win Every Time

Keryx
vs. Everyone Else

Keryx

Recommended
Dedicated retention specialists — email and SMS is all we do
Written satisfaction guarantee — results or a full refund
Founder-led from day one — no account managers or juniors
The Keryx System™ — a proven 5-phase framework, not random flows
Focused on long-term LTV and customer lifetime value
Transparent reporting — you always know what's driving revenue

Agencies & Freelancers

Email is one of ten services — never their core focus
No accountability once work is delivered — results aren't their problem
Account managers and junior staff handle your account day-to-day
Generic templates with no strategic framework behind them
Optimise for opens and clicks — not actual revenue generated
Little to no visibility into what's working or why
FAQ

Common Questions

We put it in writing in your contract. If we don't deliver measurable improvements to your email revenue by the milestones agreed upfront, you receive a full refund. No awkward conversations, no ambiguity — the terms are defined clearly before we start.
Most clients see improved open rates and click-throughs within the first 2–3 weeks as flows go live. Meaningful revenue lift typically shows in weeks 4–8 as the full system compounds. The abandoned checkout and browse flows alone often cover the engagement cost within the first month.
We audit everything in the Know phase of the Keryx System — keep what's working, fix what isn't, and build what's missing. Most brands have a welcome flow and maybe an abandoned cart. The high-value gaps are usually abandoned browse, post-purchase depth, and a proper win-back sequence.
We specialise in Klaviyo — the industry standard for e-commerce email and SMS. We integrate with Shopify, WooCommerce, BigCommerce, and most major storefronts. If you're on a different platform, mention it on the call and we'll confirm compatibility.
Yes. List quality matters more than list size. We also implement list growth from day one — high-converting signup forms, pop-up sequences, and lead capture optimisation — so you're building while we work.
You work directly with Jaskaran and Maxwell — not an account manager. We move fast, communicate clearly, and send you regular performance updates. You'll always know what's live, what's being tested, and what revenue is being attributed to each flow.
Book a Call

Let's Talk About
Your Email Revenue

Pick a time that works for you. We'll look at your current setup and map out exactly where your biggest revenue opportunities are — no commitment, no pressure.

30-minute strategy call
Free email account audit included
No commitment required
You speak directly with the founders
Satisfaction guarantee on all work

Select a Date to Book

Book Your Free Audit Call

Click any available date to open booking

No commitment. 30-min strategy call.

Your List Is An Asset.
Start Treating It Like One.

Get a free audit and a clear roadmap to unlock more revenue from the list you already have.

Book Your Free Audit

Satisfaction guaranteed in writing. Refund if we don't deliver.