SMS MARKETING AGENCY FOR ECOMMERCE BRANDS
SMS marketing your customers actually want to receive.
Your customers' inboxes are busy. Their phones are even more personal.
Letterbox helps founder-led, family-owned and women-owned ecommerce brands use SMS marketing strategically — sending timely, relevant messages that support customer relationships, drive action and give people a reason to come back.
SOUND FAMILIAR?
You're only texting when there's a sale.
Your SMS strategy begins and ends with “20% off this weekend”, meaning your customers quickly learn exactly what to expect from you.
Email and SMS aren't working together.
Both channels are communicating with your customers, but without a joined-up strategy, messages overlap, repeat themselves or compete for attention.
You're worried about overdoing it.
You know SMS can be powerful, but you're hesitant to use it because you don't want to become the brand people immediately mute.
What We Do
OUR SMS MARKETING SERVICES
More than firing off a text and hoping for the best.
Good SMS marketing isn't about sending more messages.
It's about understanding when SMS is the right channel, who needs to hear from you and what will make that message worth receiving.
We build SMS strategies that work alongside your wider customer marketing — not separately from it.
SMS Strategy & Planning
A clear plan for how SMS supports your commercial calendar, customer journey and wider marketing activity.
SMS Campaigns
Timely campaigns designed around launches, promotions, products and moments where a text message can genuinely make an impact.
Segmentation & Personalisation
More relevant messages based on customer behaviour, engagement and where someone is in their relationship with your brand.
Email & SMS Coordination
A joined-up approach that makes sure your channels complement each other instead of sending customers the same message twice.
Testing & Optimisation
We monitor performance, test what works and keep refining your strategy without turning your customers' phones into a billboard.
MARKETING FOR BRANDS BUILT DIFFERENTLY
You didn't build your business from a template. We won't market it like one.
Letterbox works with founder-led, family-owned and women-owned ecommerce brands that want their customer marketing to feel as considered as the business they've built.
We don't believe adding another channel means simply finding another place to push promotions.
SMS should have a role. It should support your email marketing, fit naturally into your customer journey and give your customers something worth paying attention to.
We bring the strategy and expertise you'd expect from a serious customer marketing agency — without turning your communication into something generic, relentless and easy to ignore.
Less noise. Better timing.
01 — REVIEW
See what's happening.
We look at your existing customer marketing, how you're currently using SMS and where the gaps or opportunities are.
02 — STRATEGISE
Give SMS a proper role.
We define where SMS fits into your wider marketing strategy and the moments where it can have the biggest impact.
03 — CREATE
Make the message count.
We plan and create campaigns and customer communications designed to be timely, relevant and unmistakably yours.
04 — OPTIMISE
Keep learning.
We monitor performance, refine the strategy and keep improving what you send and when you send it.
SMS MARKETING FAQS
The questions you're probably already Googling.
What does an SMS marketing agency do?
An SMS marketing agency helps businesses develop and manage their SMS strategy, including campaign planning, audience segmentation, message creation and ongoing optimisation.
Is SMS marketing effective for ecommerce?
SMS can be an effective channel for ecommerce brands because it provides a direct way to communicate with opted-in customers about relevant updates, launches, promotions and other timely opportunities.
How often should an ecommerce brand send SMS messages?
There isn't one perfect frequency. It depends on your customers, products, marketing calendar and whether you have something genuinely relevant to say.
Because SMS is such a personal channel, relevance matters more than simply sending frequently.
Should SMS and email marketing work together
Yes. Email and SMS are strongest when they work as part of the same customer marketing strategy. Each channel has different strengths, and a joined-up approach can help avoid repetitive or disconnected communication.
Can you help with SMS marketing alongside email?
Yes. Letterbox helps ecommerce brands build connected customer marketing strategies across email, SMS and other retention channels.