The single biggest mistake brands make with email and SMS is blasting the same message to their entire list. It’s easy to fall into this trap because it’s fast, but it costs you dearly in unsubscribes, low engagement, and ultimately, lost revenue. As Josh Behr explained on the Up Arrow Podcast, he only started segmenting his two million-person list after getting thousands of customer complaints with every send. True personalization is about acknowledging the specific relationship you have with a customer at that exact moment.
The next common misstep is segmenting only by surface-level demographics. While knowing age or location can be useful, it’s not nearly as powerful as behavior. On another Up Arrow Podcast episode, Andrew Christison made the point that using data like purchase history or email clicks lets you send the right message at the right time. This is the essence of effective Email Marketing Segmentation. Someone who has bought from you three times needs a different message than someone who just signed up. You’re leaving money on the table by not distinguishing between your VIPs, your one-time buyers, and your window shoppers. The fix is to build segments based on actions: what they’ve bought, what they’ve viewed, and how often they engage with your emails.
Another mistake is getting paralyzed by complexity. You might hear the term “hyper-personalization” and imagine you need dozens of complex, overlapping segments from day one. This often leads to doing nothing at all. Phill Manson's discussion on Hit Subscribe stresses the need to balance personalization with efficiency. You don’t need to boil the ocean. Start with the basics. As mentioned on The Unofficial Shopify Podcast's episode about Nomad Goods, foundational automated flows like a welcome series, abandoned cart recovery, and a post-purchase follow-up are where the money is. These are simple, behavior-driven segments that work for nearly every store and can be set up in tools like Klaviyo Email Marketing.
Finally, many brands mistakenly believe segmentation is only for driving a quick sale. This leads to an endless firehose of promotional emails that burns out your list. The DTC Podcast makes a great case for reviving your list with smart content, not just sales emails. You can create segments based on interests, not just purchase intent. If a group of subscribers always clicks on your blog posts about a certain topic, send them more of that content. The EcomCrew Ecommerce Podcast reinforces this, explaining that building trust and community through email creates far more loyalty than just sending coupons. This approach strengthens your brand and makes customers look forward to hearing from you, so they’re more receptive when you do have something to sell.
When done right, segmentation turns your marketing from a megaphone into a series of thoughtful, one-on-one conversations.