How to Write Marketing Emails That Actually Get Opened
For all the talk about TikTok, AI, and creator-led brands, email is still the undefeated champion of direct response marketing. It’s not dead. It’s just been badly abused by brands sending robotic, template-heavy blasts with subject lines that sound like digital wallpaper.
If your open rates are tanking, your emails aren’t getting ignored because people don’t check their inbox—they’re getting ignored because you gave them a reason to skip it. Your job isn’t to create the prettiest email. Your job is to create an email that someone actually wants to open—and maybe even looks forward to.
This isn’t about gimmicks. It’s about respecting attention. Here’s how to write marketing emails that cut through the noise, drive action, and build customer loyalty one subject line at a time.
Why open rates are your first conversion
Think of the subject line as your headline. The email as your pitch. And the click-through as your conversion. If the subject doesn’t spark curiosity or feel relevant, nothing inside the email matters. You’ve already lost.
Most brands focus way too much on the design of the email and not enough on what actually gets it opened. Buttons don’t matter if no one sees them. Carousels don’t matter if your copy is flat. Design supports performance—but it doesn’t create it. The words do.
So if you’re not seeing results from your email campaigns, don’t start by redesigning the template. Start by rewriting the subject line.
The subject line formula that actually works
There’s no magic subject line. But there are patterns that perform again and again because they tap into how people behave—not how brands think.
Here are 5 types of subject lines that consistently drive higher open rates:
- Curiosity-based:
“This changed how I shop forever…” - Benefit-focused:
“Get better sleep in 2 nights—without pills” - Question format:
“Struggling with dry skin this fall?” - Scarcity or urgency:
“Only 3 hours left: 20% off everything” - Personalized:
“Sofia, your refill is almost out”
These subject lines work not because they trick people—but because they speak to real problems, real desires, and real timing. When in doubt, test versions of each type. Your audience will tell you what they respond to.
Why your preheader text matters more than you think
The subject line gets the attention. The preheader seals the deal. That little preview text under the subject line in most inboxes is your second hook—and most brands waste it with “View this email in your browser” or nothing at all.
Use that space to reinforce your offer, create urgency, or deliver context.
Examples:
- Subject: “Something for your Sunday night routine”
Preheader: “Hint: it involves 10 minutes, a warm drink, and zero screens” - Subject: “You’re not too late (yet)”
Preheader: “But our last batch of orders ships tonight”
Treat the preheader like the subtitle of a Netflix show. It should pull people in even deeper.
The body of the email: write like a person, not a brand
This is where most emails collapse. The subject line works, the preheader is fine—and then the email opens like a stiff press release or a lazy product dump. Your email copy should read like a helpful note from someone who gets your customer, not like a company brochure.
Good marketing emails are short, skimmable, and anchored in one clear purpose. Don’t overload them with five CTAs or jam three campaigns into one message. One email, one goal.
Talk to one person. Use phrases like “you,” “here’s what we thought you’d like,” and “next step.” Drop the brand-speak. People don’t engage with brands—they engage with people. The more natural your copy sounds, the more it gets read.
What to send besides promos
If the only emails you send are discounts and restocks, your audience will learn to ignore you—until they want a deal. That’s not a relationship. That’s a transaction.
Mix in value-driven content that educates, entertains, or empowers. Depending on your brand, this could be:
- A story from a founder or team member
- Tips related to your product’s use (without sounding like a manual)
- Short video links (especially 9:16 verticals)
- Social proof or testimonials
- Behind-the-scenes product insights
- Community shoutouts or UGC highlights
Email isn’t just for pushing product. It’s for building connection. And connection = retention.
Timing and consistency beat overthinking
Brands that overthink email usually underperform. They wait too long, send too little, and second-guess everything. Consistency wins in email. Your list wants to hear from you—remind them that you’re here to help, to serve, and to solve something that matters.
You don’t need to send every day. But you do need a cadence they can rely on. Weekly campaigns. Monthly product roundups. Automated flows triggered by behavior. It’s not about blasting. It’s about rhythm.
If you’re not sure where to start, send one value email per week—no pitch, just helpful insight. Build trust. Then earn the right to make an ask.
The TL;DR? Write like a real human who wants to be useful. That’s the kind of email that gets opened. And that’s the kind of email that makes money.
