Your Most-Opened Emails Are Underutilized: The New Role of Transactional Messages

Transactional messages are the most opened emails—so why not optimize them? Leading ecommerce brands are turning them into converting retention channels

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Are You Ignoring Your Most-Opened Emails?

Let’s be honest: as an ecommerce brand, you've probably spend hours crafting the perfect promotional campaign—testing subject lines, obsessing over design, watching open rates barely break 25%.

Meanwhile, your transactional messages—the transactional emails and transactional SMS notifications confirming orders, updating shipments, or notifying delays—are quietly pulling in 70–90% open rates, often with multiple views per order.

And most of them? Still look like receipts. That’s a missed opportunity. So let's fix your transactional email marketing strategy.


What Are Transactional Messages?

Transactional messages are system-triggered emails sent after a customer action. In ecommerce, that means:

TypePurpose
Order ConfirmationConfirms purchase success
Shipping NotificationProvides tracking info
Out for DeliveryNotifies when order is en route
Delivery ConfirmationConfirms package arrival
Stalled / Delayed AlertsCommunicates shipping issues proactively
Ready for PickupInforms customers their order is available
Password ResetAllows secure account access

They’re expected. They’re functional. But they don’t have to be boring.


Why You Should Rethink Transactional Messages

Here’s the problem: most brands treat transactional messages like backend necessities—just enough to get the job done.

But smart operators are flipping the script. They're turning these high-intent, high-visibility touchpoints into brand moments and profit drivers.

Here’s why:

  • They get seen. Open rates average 3x higher than promotional emails.

  • They’re trusted. Customers are actively looking for them—they want to engage.

  • They’re overlooked. That means any improvements stand out instantly.

  • They reduce support volume. Proactive updates = fewer “Where is my order?” (WISMO) tickets.


Transactional Messages and Brand Perception

You’ve invested time and money getting a customer to convert. But what does their experience look like after that “Place Order” button?

This is where so many brands fall short.

A transactional email that matches your brand tone, aesthetics, and customer experience can be the difference between a one-time buyer and a loyal repeat customer. It shows you’re paying attention—not just to the purchase, but to the relationship that follows.

And with more brands than ever competing for retention, your post-purchase communication is now a key differentiator.


Future-Proofing Your Post-Purchase Experience

Ecommerce is shifting. Acquisition costs are rising. Deliverability is harder. Margins are tighter.

The brands winning today—and tomorrow—aren’t just optimizing for more clicks. They’re optimizing the infrastructure of retention. Transactional messages are a critical part of that.

When set up correctly, they can:

  • Reduce costs
  • Drive revenue
  • Build brand equity
  • Strengthen customer loyalty
  • Create a seamless, connected experience across platforms

It’s not just about sending a shipping confirmation. It’s about turning every message into a moment that builds trust and drives action.

How Leading Brands Are Flipping the Script

Here’s how ecommerce brands are optimizing transactional messages for retention and revenue in their post-purchase experience:

1. Branded, On-Theme Design

Stop sending system-default emails. Custom templates reinforce brand voice and build post-purchase confidence.

2. Smart Cross-Selling

Use product feeds or personalized recommendations inside tracking or confirmation emails to drive repeat purchases—right when attention is highest.

3. Helpful, Relevant Content

Include product how-tos, return policy tips, or loyalty program info. Customers are more likely to engage with helpful content when they’re already engaged with your brand.

4. Segmented Problem Order Triggers

Go beyond "Your order shipped." Trigger messages based on actual carrier events, especially when problem orders arise:

  • “Stalled in transit”

  • “Ready for pickup”

  • “Delayed due to weather”

It’s operational transparency and a marketing strategy in one.


You Don’t Need to Rethink Your Stack to Do This

Optimizing transactional messages doesn’t require ripping out your ESP or rebuilding flows from scratch. Tools like Malomo Transactional Email & Order Tracking allow brands to:

  • Launch in under 5 minutes

  • Keep transactional sends separated from marketing domains (better deliverability)

  • Automate dynamic triggers tied to real-time shipping events

  • Also seamlessly integrate with Shopify, Klaviyo, and major ESPs to customize your post-purchase experience.


The Real ROI of Transactional Messages

Think about the costs tied to not optimizing transactional messages:

  • Support Team Load: A lack of proactive updates leads to WISMO tickets, which can easily make up 20–40% of all CX inquiries. That’s time, money, and brand trust lost.

  • Customer Uncertainty: A generic “thanks for your order” email does nothing to ease the post-purchase anxiety customers often feel. Clear, timely updates reduce refund requests and build confidence.

  • Missed Revenue: You’re leaving money on the table when you don’t use these emails to recommend relevant products or content—especially when they’re getting opened multiple times.

Transactional emails aren’t just functional—they’re predictable, recurring moments of customer attention. That makes them a perfect place to deliver both clarity and value.

Don’t Chase Attention. Optimize What Already Has It.

Marketing is noisy. Retention is expensive. But transactional messages are already in your customers’ inbox—and they’re already getting read.

The question isn’t why to optimize them.
It’s why not.

Want to see what transactional messages could do for your brand? Check out Malomo, the best transactional email provider for Shopify brands.

Try Malomo’s ROI & WISMO Cost Savings Calculator to get a quick estimate.

Examples of transactional messages

Transactional email and SMS templates can help further expedite your brand's transactional email marketing strategy. Check our our library with a ton of examples from brands

Briogeo em

Briogeo tells their customers their order is shipping soon! What's their open rate and CTR on these transactional emails? 59% and 33%. Check out how they get those results

Check out how they get those results
Soylent subscriber

Soylent sends their subscribed customers their segmented Shipment Fulfilled email. Note their highlight of their referral program in their email!

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Mudwtr out for delivery sms

MUD/WTR let's their customers know their order is out for delivery through the Malomo x Klaviyo integration.

Honeylove delivered sms

Honeylove sends their customers a transactional sms through our Klaviyo integration to let them know that their order has been delivered!

Why NOT optimize your transactional messages?

You have to send them, make them work better for your brand and your customers will love it.