Transactional emails are among the most important touchpoints after a purchase is completed. Customers expect them immediately and rely on clear information about order status, delivery date, invoice, or tracking link. When these details are displayed clearly, it reduces repetitive questions to support and builds greater trust in the entire shopping process.
Structured data improves the customer experience by showing key information directly in their inbox preview. They don’t have to open each message to find what they need. The most important details are right at their fingertips, at the moment they naturally return to them – right after checkout or while waiting for delivery.
Essential Information at a Glance — on Mobile and Desktop
The display of structured data is already supported by the leaders in email delivery — Gmail and Seznam — which together cover around 95% of all transactional emails sent by online stores in Slovakia and the Czech Republic.
Both platforms can automatically show extended details such as order status, delivery date, tracking link, or invoice directly in the inbox preview — across both web and mobile interfaces, where clarity matters even more. This gives customers instant access to the most relevant information even before opening the message.
The result:
- fewer repetitive questions for customer support
- faster issue resolution
- higher post-purchase satisfaction
- a more professional communication experience
- greater engagement with transactional emails
Activating structured data also includes important technical steps such as domain verification, SPF and DKIM configuration, and sender registration in Gmail — all of which naturally improve credibility and deliverability. Combined with a better user experience, this change brings immediate impact — visible in both customer satisfaction and communication performance.
Your customers don’t need to set up anything on their side — we’ll take care of the entire process for you.
What Can Be Displayed in the Inbox Preview?
- Brand logo next to the subject line
→ The customer immediately recognizes who the message is from

- Order status and identification
→ Clear display of the order ID, shipment number, and current status

- Estimated delivery date + action
→ Visible delivery date + “Track package” button


- Order or invoice overview
→ Customers can access details instantly without searching

How the Technical Implementation Works
Introducing structured data in transactional emails involves a mix of technical and content adjustments to ensure correct display across most inbox providers.
The process includes:
- verifying that the domain meets Gmail’s minimum volume (at least 100 transactional emails per day),
- updating transactional email templates and adding data in JSON-LD or Microdata format,
- checking and setting authentication records (SPF, DKIM),
- registering the sending domain in Gmail,
- testing display on real inbox accounts.
Some email platforms (Mailchimp, Ecomail, Brevo, etc.) only partially support structured data. That’s why we always tailor the solution to the specific system the client uses.
In practice, the setup usually takes 6–12 hours depending on the complexity of the integration, testing, and number of templates. Once access and scope are confirmed, we can launch implementation within a few days.
A Smart Investment That Brings Results
Structured data in emails is more than a technical enhancement — it’s a practical tool that:
- reduces the number of support inquiries,
- speeds up issue handling,
- improves email clarity, especially on mobile devices,
- strengthens customer trust in the post-purchase process,
- increases engagement with transactional messages,
- and enhances deliverability through verified sender registration.
Your customers gain instant clarity, while you save time, boost satisfaction, and create a more professional impression with every message.
If you send hundreds of orders a day, this upgrade will make a visible difference.
Get in touch — we’ll help you get the most out of every email you send.
FAQ: About Structured Data in Transactional Emails
What exactly is structured data in emails?
It’s a special data format (for example, JSON-LD) that allows platforms like Gmail or Seznam to show key details — such as order status, delivery date, or tracking link — directly in the inbox preview. Customers can see essential information before even opening the email.
What are the main benefits for my online business?
Structured data reduces repetitive support questions, speeds up responses, and improves customer satisfaction. It also increases deliverability thanks to verified domain authentication (SPF, DKIM, Gmail registration) and enhances the overall trustworthiness of your brand communication.
Do customers need to configure anything?
No. Everything happens on the sender’s side. Once implemented, structured data displays automatically for all customers using supported email platforms.
Which inbox providers support this feature?
Currently, Gmail and Seznam fully support structured data, covering roughly 95% of transactional email deliveries in Slovakia and the Czech Republic. Others, such as Outlook or Yahoo, still offer only partial support.
What kind of information can be displayed?
Typically: your brand logo, order ID and status, delivery date, a “Track package” button, or a link to the invoice. These details appear right in the inbox preview so customers instantly see what matters most.
How much can it reduce customer inquiries?
For online retailers sending hundreds of orders daily, routine questions like “When will my package arrive?” or “Where can I find my invoice?” often drop by 10–30% within the first few weeks of activation.
Is implementation complicated?
Not at all. The setup usually takes about 6–12 hours depending on your system and the number of templates. It involves adding structured data, verifying authentication, and testing real inbox displays. Once approved, we can deploy the change within a few days.
Can it work with my current platform (Mailchimp, Ecomail, etc.)?
Most email platforms support structured data at least partially. Some, like Mailchimp or Brevo, require template adjustments or API-based solutions. We adapt the implementation to your system to ensure full compatibility.
What needs to be prepared technically?
In addition to inserting the JSON-LD or Microdata code, you’ll need properly configured SPF and DKIM authentication, a verified sending domain in Gmail, and a minimum of 100 transactional emails per day for credibility. These steps also boost your overall deliverability.
Is it worth it for smaller businesses?
Absolutely. Even smaller online stores benefit from a more professional look, clearer communication, and fewer repetitive customer questions. For larger operations, the time savings and customer impact are even more significant.
Will it improve my deliverability rate?
Yes — positively. Domain authentication (SPF/DKIM) and Gmail sender registration reduce spam risks and improve your sender reputation. Verified domains are favored by Gmail’s algorithms, leading to more reliable delivery.
Can this also increase open rates?
Yes. Seeing a familiar brand logo and key information in the inbox preview builds trust and curiosity, leading to higher open and click rates. It also signals professionalism, which reinforces positive brand perception.
How much does implementation cost?
The cost depends on your setup — number of templates, platform, and required adjustments. Typically it involves several hours of a specialist’s work, with visible benefits right after launch: better deliverability, fewer support requests, and happier customers.
How can I check if my emails already include structured data?
Send a test transactional email to a Gmail account and see if the preview displays your logo, order status, or tracking link. You can also use the official Gmail Markup Tester to validate your code.
When will I see results?
Improvements appear almost immediately after activation — fewer repetitive questions, stronger domain reputation, and faster, more reliable email delivery. Customer satisfaction typically rises within days.