Email marketing has one of the highest returns on investment of any digital channel — but only when done right. Too many businesses treat their email list like a megaphone, blasting out generic messages and wondering why nobody’s clicking. Here are five tips to help you build an email program that people actually want to open.
#1: Write Subject Lines People Can’t Ignore
Your subject line is the first thing your subscriber sees. If it doesn’t earn the open, nothing else matters.
Keep it short (under 50 characters), specific, and curiosity-driven. Instead of “Our Monthly Newsletter,” try “The mistake killing your open rates.” Avoid all-caps, excessive exclamation points, and words that trigger spam filters like “FREE!!!” or “Limited time offer!!!” Test two subject lines against each other regularly, and let your audience tell you what works.
#2: Stop Emailing Everyone the Same Thing
Sending one generic email to your entire list is one of the fastest ways to lose subscribers. People expect relevance, and when they don’t get it, they unsubscribe or simply tune out.
Segment your list by behavior, purchase history, location, or where someone is in the customer journey. A first-time subscriber should hear something very different from a loyal customer who’s bought from you three times. Even splitting your list into two or three basic groups can dramatically improve engagement. The more relevant your email feels, the more it gets read.
#3: Timing is everything
When you send matters almost as much as what you send. Studies consistently show that Tuesday through Thursday mornings, roughly between 9 and 11 AM in your subscribers’ timezone, tend to generate the strongest open rates. Monday inboxes are chaotic; Friday inboxes are mentally checked out.
That said, your own audience data is the only data that truly matters. Use your email platform’s analytics to track when people are opening and clicking, and adjust your send schedule accordingly.
#4: One Clearly-Defined Goal
Every email you send should have a single, clear call to action. When you give readers too many options, they don’t know where to look, and the result is often inaction. Pick one thing you want them to do: read an article, book a call, claim a discount, download a resource. Make that CTA visually prominent, write it in action-forward language (“Grab your spot” beats “Click here”), and repeat it once or twice in longer emails. Simplicity drives clicks.
#5. Test, Learn, and Improve
The best email marketers are relentless testers. They don’t assume. Instead, they experiment.
Run A/B tests on subject lines, send times, CTA button colors, email length, and tone of voice. Even small wins compound significantly over time. A 5% lift in open rate sounds modest, but across a list of 10,000 subscribers, that’s 500 more people reading your message every send.
Build a simple testing habit: one variable, one test, one clear winner. Document what you learn, and apply it to the next campaign.
The Bottom Line
Great email marketing isn’t about clever tricks. Great email marketing is about showing up consistently with content your subscribers actually find valuable. Nail your subject lines, send to the right people at the right time, give them one clear next step, and keep refining as you go. That’s how email becomes your most reliable growth channel.
By: Elisa Rode
Kearley CEO and chief strategist
