Retention · WhatsApp and SMS

A WhatsApp and SMS marketing agency people opt into

The phone is the most direct line you own, and the least forgiving. So we build the permission it runs on first.

A Klaviyo sign-up form report for a pop-up we built, the form named with its views, its submits and the submit rate it recorded
The revenue column of a live client Klaviyo report, what each automation placed beside the change on the period before it
Official Klaviyo PartnerShopify PartnersThermosWilsonsGeneProLiberation FoodsHusk&SeedCapital Golf
Where a number comes from

Permission is a form, a tick box and a sentence you can produce later

Nobody remembers agreeing to anything. The record has to.

A Zen Maitri SMS sign-up pop-up on their
storefront: phone number field, marketing consent tick box and the full opt out wording

What the profile keeps

Four things, on the record, for as long as that number is on your list.

SourceSign-up pop-up
MethodUnticked box
WordingStored verbatim
Opt outReply STOP
Yours to export

The form, the list and the record all live in your own account. If we stop working together tomorrow, the permission you collected walks out with you.

Two Liberation chilli and lime cashew packs on an orange ground with fresh chillies and a wedge of lime beside them

Email waits until somebody opens their inbox. A message doesn't wait, and that's the whole advantage. It's also why permission decides everything.

Inside the channel

Six things that decide whether a message is welcome

Pressing send takes ten minutes. Five of these six happen before it.

The campaigns list inside a live client Klaviyo account, each send beside the segments it was addressed to and the status it finished on

Consent, captured with a receipt

Source, timestamp, wording and confirmation reply, stored on the profile. If you can't show how a number was collected, it doesn't belong on the list.

Threads that answer back

WhatsApp turns a restock alert into a conversation: quick replies, rich media, read receipts. There's a person on the end, holding the phone their family group chat arrives on.

Send windows and frequency caps

Quiet hours are set per market, the cap per segment, so nobody gets three messages in a week. Your email calendar counts against the same cap.

The sender, registered before you send

A dedicated number, carrier registration, business verification and templates approved before anyone presses send. Most programmes that underperform fail here, not in the copy.

The segment left after suppression

STOP and every other opt-out route feed one suppression list shared with email, so opted out means opted out everywhere. What survives that is the send.

The break-even sum, before the send

A message has a hard unit cost, and that's the healthiest constraint in retention marketing. We run the break-even sum on your numbers before a broadcast gets scheduled.

Case study

Rebel Aromas, and the capture work behind the list

31,792new subscribers in twelve months, up 534 percent on the year before
7.94%peak conversion rate on the rebuilt sign-up units
27.3%of store revenue attributed to email, up from 8.9 percent

Rebel Aromas, email programme, January to December 2025.

Before the first send

FAQs

A GenePro Collagen protein pouch photographed whole on a marble counter, the flavour and the serving count printed on the front
General Questions
Why should I bother with SMS and WhatsApp when I already do email?

Because they reach people where email can't. Texts get opened within minutes and read over 90% of the time, while WhatsApp adds two-way, rich conversations customers actually enjoy. Used alongside email, they're the fastest, most direct line you own to your customers.

How will SMS and WhatsApp actually grow my business?

No fluff, no vanity metrics. Our flows and campaigns are built to drive real actions: clicks, conversions and repeat orders. We recover carts, win back lapsed buyers and power launches, and every one of them is judged on revenue. Not opens.

How do we get started?

Easy! We kick off with a deep-dive discovery session to understand your brand, your audience and your goals. From there we build a tailored SMS and WhatsApp strategy that's ready to launch fast.

What is your pricing structure?

Customised packages, because no two brands are the same. Once we know your list size, your sending volume and what you're after, we scope a monthly retainer. Message and carrier fees are billed on top, where you can see them.

Audience and Personalisation
My audience is unique. How do you personalise messages for them?

Generic blasts? Not how this works. We use your data, your purchase history, your customers' behaviour, to send the right message to the right person. Every text and WhatsApp reads one-to-one. Never like a mass send.

Can you help with segmentation?

Absolutely, and it's where SMS earns its margin. We split your list by behaviour, lifecycle stage and value, so high-intent customers get the timely nudge while everyone else isn't over-messaged.

How do you grow my subscriber list compliantly?

Sign-up units, keywords, pop-ups and checkout opt-ins that capture explicit consent, so your list grows fast and stays fully permission-based, never bought or scraped.

Technical and Integration
Can you integrate with my current e-commerce platform or CRM?

Yes. We work natively with Shopify, Klaviyo and the major SMS and WhatsApp platforms like Postscript and Attentive, so your messaging, your customer data and your flows all talk to each other in real time. No exports, no second list nobody maintains.

How do you make sure messages actually get delivered?

Number provisioning, carrier registration and list hygiene, all done properly before the first send. That's what keeps your delivery rates up and your sender reputation clean, so messages land instead of getting filtered or blocked.

Are your SMS and WhatsApp practices GDPR and TCPA compliant?

Always. We handle explicit opt-in, clear disclosures, easy opt-outs and suppression, so your programme stays compliant with GDPR, PECR and TCPA and your brand stays protected.

Campaign Management
How often will you send messages?

Enough to drive revenue, never enough to annoy. Cadence is set by segment and behaviour, and we balance broadcasts with triggered flows so people stay engaged instead of fatigued. That's what keeps your opt-out rate low.

Do you handle the copy and creative?

Yes. We write every message and design the rich media and buttons for WhatsApp, all on-brand and built to convert, so you never have to draft a text yourself.

Do you A/B test campaigns?

Constantly. We test copy, offers, timing and segments, then double down on whatever drives the most revenue per send, so the programme keeps getting sharper.

How do you handle opt-outs and suppression?

Automatically. Opt-outs are honoured instantly and unengaged numbers are suppressed, keeping your list healthy, your compliance tight and your message costs down.

Performance and Results
What metrics do you track to measure success?

The ones that matter: revenue per message, click and conversion rates, list growth and opt-out rate, not vanity numbers. Every send is measured against the money it makes.

Will I have access to reports and analytics?

Yes. You get clear reporting that ties every campaign and flow back to revenue, plus regular reviews with our team, so you always know exactly what's working and what's next.

How quickly can I expect to see results?

We won't put a date on it, and anyone who does is guessing. What we can tell you is the shape. Core flows like welcome and abandoned cart start earning almost as soon as they go live, and segmentation and testing compound the returns over the months after that.

Not got your answer?Chat to us

Let's look at what you're actually allowed to send

Bring your list, your platform and your consent records. We'll tell you what you can message tomorrow and which three triggers we'd build first.

Engage CommerceTheo Tziapouras, founder of Engage Commerce

Book a call with our founder.

We're all about relationships built on trust, mutual respect and a shared vision for success. If that sounds like your vibe, let's make some waves together 🌊