What is Postscript and who is it for?
Postscript is an SMS marketing platform built specifically for Shopify brands. It helps stores grow a subscriber list, send automated texts triggered by shopper behaviour and run campaigns to targeted segments, all using customer and order data from Shopify. It suits direct-to-consumer brands selling on Shopify that want a personal, immediate channel alongside email to drive repeat purchases and build stronger customer relationships.
What does a Postscript agency do?
A Postscript agency helps you set up, improve and run Postscript so SMS earns real revenue without wearing out your subscribers. At Vertical that covers audits, sign-up strategy, automations, campaign planning, copywriting, segmentation, integrations, compliance and reporting. Because we also build Shopify stores and run email and paid media, we make sure SMS fits into a joined-up plan for growth.
Why choose Postscript for a Shopify store?
Because Postscript is designed around Shopify, it works closely with your store's customer, product and order data, which makes automations and segments easier to build and more relevant to each shopper. Many Shopify brands also find it straightforward for their team to use day to day. Whether it is the right choice depends on your channels, budget and existing tools, and we will give you an honest view.
How do you grow an SMS list with Postscript?
We design mobile sign-up experiences, test offers and timing and give shoppers clear moments to subscribe, such as their first visit or checkout. Email and paid social can also encourage existing customers to opt in. We capture consent properly and explain what subscribers will receive, because a list of engaged people who expect your messages is worth far more than a large one that quickly unsubscribes.
Which automations should we start with?
Most Shopify brands see the quickest results from welcome, abandoned checkout, abandoned basket and browse automations, followed by post-purchase, cross-sell, replenishment and win-back messages. We build them around your products and how often customers reorder, coordinate timing with your email flows and test each step. Once the essentials perform well, we add more specific automations where they suit your range.
How do SMS and email work together?
They work best as one plan. Email suits richer stories, product detail and regular newsletters, while SMS suits short, timely messages such as launches, restocks and reminders. We decide which channel leads for each journey, keep data and suppression in sync between platforms and avoid sending the same message twice. Reporting looks at combined performance, so you can see what each channel genuinely contributes.
How do you keep SMS marketing compliant?
SMS is permission-based and regulated, so compliance is part of the work from the start. We make sure consent is captured clearly, opt-outs are honoured straight away, messages go out at sensible hours and frequency stays reasonable. We review your setup against the rules that apply in the markets you send to and flag anything your legal team should confirm for your business specifically.
How do you measure Postscript performance?
We track revenue per subscriber and per message, automation performance, list growth, click rates and opt-out rates, and look at the effect on repeat purchase rates and lifetime value in Shopify. Platform attribution is helpful but can overstate impact, so we compare it with store data and wider tracking. That gives you an honest picture of what SMS adds and where to improve next.
Can you migrate us to Postscript from another SMS platform?
Yes, when it makes sense. We first review your current platform, list, integrations and costs, because improving how you use an existing tool is sometimes the better option. If moving is right, we carry consent records and subscribers across carefully, rebuild automations, recreate key segments and test everything before launch, so the switch is smooth for your team and invisible to your customers.
How do we get started with Vertical?
Start with a conversation about your brand, your Shopify store and how SMS fits your marketing today. If you already use Postscript, we usually begin with an audit of your list, automations, campaigns and data, then share a prioritised plan. If you are new to SMS, we scope the setup and agree a realistic timeline. Either way, we will tell you plainly what will make the biggest difference.
