Every new ecommerce store starts with the same to do list. Build the site. Source the products. Set up the payments. Launch the ads. Drive the first traffic. Make the first sale. Somewhere on that list, usually near the bottom, is the line that says set up email marketing later. After the store finds its feet. After the ads start working. After the founder has more time.
That single decision, treating email as something to set up later, is one of the most expensive mistakes a new ecommerce store can make. We see it every month. Founders come to us six or twelve months into their launch, finally ready to invest in email, and we have to deliver the difficult news. They have already lost a meaningful share of the revenue they could have earned, and there is no way to get it back.
If you are about to launch a store, or you have launched in the past few months, this is the post we wish every new ecommerce founder would read before they spend another dollar on traffic.
The Math Of Waiting Is Brutal
Let us look at the numbers honestly, because they are striking once you see them in one place. The global average cart abandonment rate across ecommerce sits at roughly 70 percent. That means out of every ten shoppers who add a product to their cart on your store, seven leave without paying. That is not a problem you can fix with better product photos or a slightly faster checkout. It is the baseline reality of ecommerce.
Now layer in the rest of the funnel. Most stores convert somewhere between 1 and 3 percent of total visitors into customers. Which means for every 100 shoppers your ads send to your store, fewer than three actually buy. The remaining 97 leave with no purchase, and unless you have a way to keep talking to them, they leave forever.
This is the gap that email marketing is built to close. A well built abandoned cart flow recovers a meaningful share of the carts that would otherwise have been lost. A welcome flow turns first time visitors into first time buyers within days of their first interaction. A browse abandonment flow brings back shoppers who looked but did not buy. Without these flows running from day one, you are paying for traffic that has no system to convert it beyond the single visit.
Email Returns Far More Than Almost Any Other Channel
Across ecommerce, email marketing returns somewhere between $36 and $42 for every $1 spent. That is not a marketing claim. It is the consistent industry figure year after year, published by every major email platform and research firm in the space. There is no other channel in your marketing mix that even comes close. Paid ads return a fraction of that. Influencer marketing, when it works, still cannot match it. Email is the only channel where the customer has explicitly said yes, please contact me, and where the cost of reaching them is essentially flat regardless of volume.
For new stores, the return is often even higher than the industry average. The reason is simple. New stores tend to have small but highly engaged lists. The people who sign up for emails from a brand new brand are doing so out of genuine interest, not out of habit. They open, they click, they buy. Every flow you have running from day one is making the most of that early enthusiasm.
Wait six months to set up email and that early enthusiasm has already faded. Many of those first signups have moved on, forgotten about you, or unsubscribed. The cost of acquiring them was paid once. The opportunity to talk to them was lost forever.
Lists Compound, So Starting Late Compounds The Wrong Way
Email lists grow over time. The longer your store is live with an active signup form and a functioning welcome flow, the more your list grows in the background while you focus on the rest of the business. By the time you have been live for a year, a well configured store can have thousands of subscribers built up from organic traffic, ad clicks, popups, and post purchase signups.
If you wait six months to set up email properly, you are not just losing six months of revenue. You are losing six months of list growth. Six months of welcome flow opportunities. Six months of post purchase reviews and reactivations. Six months of compounding subscriber value. That gap never closes. You can grow faster from month seven onward, but the head start you skipped is gone.
The brands we work with who set up email properly on launch day routinely have email contributing 25 to 40 percent of total revenue within their first year. The brands who wait often find themselves at 5 to 10 percent contribution at the same point, working uphill to catch up on a foundation that was never built.
What Founders Often Believe That Is Not Quite True
There are a few common assumptions new founders carry into the email conversation that we hear over and over. Each one feels reasonable on the surface, and each one is quietly costing them money.
The first is that email is something to set up when traffic is bigger. The truth is the opposite. When traffic is small, every visitor counts even more. Email is what turns a tiny trickle of visitors into a recurring revenue stream. The smaller your traffic, the more important it is that you capture and nurture every single shopper who arrives.
The second is that paid ads will scale faster, so email can wait. Ads can scale faster in raw volume, yes. But ads have a fundamental ceiling that email does not. The cost per click keeps rising. The conversion rate slowly falls as you scale into colder audiences. Email, in contrast, gets more efficient over time as your list grows and your flows mature. Brands that survive long term build both channels in parallel, not one after the other.
The third is that email is something a founder can set up themselves in a weekend. Klaviyo’s user interface makes the basic mechanics feel approachable, and it is. The technical setup is not the hard part. The hard part is the strategy, copy, design, segmentation, deliverability configuration, and ongoing testing that separates a flow that just sends from a flow that actually converts. We regularly take over founder built accounts where the flows are technically running but are leaking revenue in five different places at once.
What You Should Actually Set Up On Day One
For a brand new store, you do not need everything on day one. You need the foundation. Specifically, you need a properly configured Klaviyo account with clean integration to your store. You need a welcome flow that introduces your brand and drives the first sale. You need an abandoned cart flow capturing the seven out of ten shoppers who walk away. You need a browse abandonment flow catching the earlier intent. And you need a signup form on your site that actually grows your list from day one.
Set these up properly and the rest of your marketing works harder. Every dollar of paid traffic is followed by a system that keeps converting. Every product page view has a path back. Every cart abandonment becomes a recovery opportunity instead of a loss.
A Better Way To Launch
At EHABY, our Ignite package is built specifically for founders launching new ecommerce stores. We set up your Klaviyo account, integrate it cleanly with your store, build your four core flows with custom copy and design, set up your signup form, and hand you a clear roadmap for what to build next as your store grows. The whole system goes live before you spend your first dollar on a serious traffic push, so your store is earning from every visitor from the moment your ads start running.
If you are weeks or months from launch, this is the moment to plan email in. Book a free Klaviyo strategy call and we will map out exactly what your launch needs and what good performance should look like for a store at your stage. Setting it up right at the start is dramatically cheaper, and dramatically more profitable, than trying to retrofit a working system once the traffic has already passed through.