7 Email Marketing Trends For Better Customer Retention

If you’re still sending the same emails you were two years ago, we need to talk.
The email landscape has evolved fast, and 2025 is already shaping up to look completely different.

In this blog, I’ll break down seven major email trends that are reshaping how ecommerce brands engage, convert, and retain their audiences. These aren’t predictions. They’re what’s working right now for top-performing brands using Klaviyo, Omnisend, and other leading platforms.

Let’s dive in.

1. Mobile-First Design

This one is non-negotiable. Over 80% of ecommerce email opens now happen on mobile.
And yet, too many brands still use multi-column layouts, small fonts, and buttons so tiny you’d need a stylus to click them.

Here’s what to do instead:

Use single-column layouts that are clean and easy to scroll with your thumb.
Bump your font size to at least 16px for readability.
Make buttons large enough to tap, ideally 48x48px or larger.
If you’re designing in Figma, frame everything in a 400–450px mobile canvas.

Your customers shouldn’t have to pinch, zoom, or squint to shop from your emails.

2. Design for Dark Mode

Almost half of all mobile users have dark mode turned on by default.
If your emails only look great in light mode, you’re losing trust before the customer even reads your headline.

Here’s how to fix it:

Use transparent PNGs, not JPEGs, so your logos don’t have white boxes around them.
Avoid pure black or pure white backgrounds. Use soft grays and off-whites instead.
Always test your emails in dark mode before sending. Tools like the Dark Reader Chrome extension make this easy.

We’ve seen clients at ASPEKT boost their clickthrough rates by up to 12% simply by optimizing their dark mode rendering.

3. Keep Emails Short and Skimmable

No one wants to read an essay in their inbox. People are scrolling while walking the dog or half-watching Netflix, and their attention spans are shrinking.

Your email should get the point across in 15 seconds or less.

Here’s how:

Lead with your strongest offer or value proposition. Don’t bury it deep in the email.
Stick to one call to action per email unless you’re doing a roundup.
Use icons, bullet points, bolding, and spacing to make your message easy to scan.

You’re not oversimplifying your message. You’re tightening it up so it lands.

4. The Return of Plain Text Emails

Plain text emails aren’t new, but they’re performing better than ever. They feel personal, human, and genuine in a sea of overly polished designs.

We use them in:

Welcome emails from the founder
Post-purchase check-ins
Win-back campaigns

They work because they sound real.

A few best practices:

Personalize them with first names.
Write like you’re talking to a friend or your grandma.
Keep the tone conversational and authentic.

If it’s from the founder, it should sound like it actually came from the founder.

5. Smarter Segmentation with AI

Most major ESPs like Klaviyo, Omnisend, and Sendlane now include AI tools that can predict purchase intent, identify VIPs, and dynamically personalize content.

Here’s how to start using AI strategically:

Segment users who browsed but didn’t buy, then send them product-specific reminders.
Create flows for one-time buyers who never returned.
Use predictive analytics to trigger win-back emails before churn happens.

AI isn’t replacing personalization. It’s scaling it.

6. Optimize Your Above-the-Fold

This is the part of the email your reader sees without scrolling, and it’s where most brands lose attention.

Adding clarity and focus to your above-the-fold section can increase clickthrough rates by over 100%.

Make sure it includes:

A clear headline
A visible offer or value proposition
A strong call to action

If users have to scroll to see your CTA, half of them never will, especially on mobile.

7. Micro Animations That Catch the Eye

Subtle motion can lift engagement more than you’d think. A simple GIF or animation adds visual interest without clutter.

Use micro animations in:

Product demos
Testimonials
Announcements and banners
Countdown timers
Button pulses

A little movement in the right place makes your email feel alive and dynamic.

Just don’t overdo it. You’re not building a Las Vegas billboard.

Final Thoughts

If you want to stay ahead in 2025 and set your brand up for 2026, focus on these core principles:

Design mobile-first
Test for dark mode
Keep your copy short and skimmable
Mix in plain text emails
Leverage AI for smarter segmentation
Optimize your above-the-fold
Add subtle animations where it counts

These trends aren’t just about design or tech. They’re about relevance.
Because the brands that evolve fastest are the ones that win the inbox.

If you want my team at ASPEKT to review your current retention setup and show you exactly where you’re leaving money on the table, grab a free Klaviyo audit and we’ll break it all down for you.