For years, email performance has been measured by open rates and click-through rates. This has often encouraged creative subject lines to encourage recipients to open the email and increase those metrics.
Those metrics still have value, but they shouldn’t be looked at in isolation, and certainly shouldn’t be the driver behind subject lines and body content.
Audience behaviour has changed. Email isn’t just read when it arrives, it’s searched for and revisited when the information is needed.
For teams focused on engagement and encouraging self-service, emails need to be structured with this behaviour in mind.
The inbox as a searchable information source
Most people don’t delete emails once they’ve read them. They leave them in their inbox to refer back to later.
Consultation notices, service updates and grant announcements are often revisited when they become relevant, typically via search, not by scrolling through 100s of emails. People use keywords like:
- “waste collection changes”
- “budget consultation 2026”
- “community grants deadline”
If those words aren’t clearly included in your subject line and body copy, the email is harder to find.
For Government teams, this affects engagement and service delivery. When someone searches for “pet register renewal” or “waste collection dates”, they’re trying to complete a task or meet deadline.
If your email is easy to find and clearly structured, it supports participation, reduces unnecessary enquiries and improves the customer experience.
What “Email SEO” means in practice
Email SEO is about making emails easy to find later. It means using clear language, logical structure, and the right keywords. The goal isn’t just to drive opens. It’s to make emails easy to retrieve and act on.
For communications teams, that means treating emails as an on-going information resource, not just a one-off message.
How to structure emails for long-term value
Write clear subject lines
It sounds obvious, but subject lines should make it obvious what the email is about. Be specific and use the words people are likely to search later. Avoid overly creative or teaser-style subject lines written purely to drive opens.
Clear content hierarchy
Use descriptive headings such as “Key Dates” or “Application Deadline.” This makes the email easier to scan and easier to find later, whilst also being great for accessibility.
Use the language your audience uses
Avoid internal project names if they’re not the terms your audiences uses. Write in the language people would actually search.
Keep important details in text
Include dates, deadlines and key information in live text, not just images. This makes emails more accessible and easier to search.
Keep your format consistent
Use consistent naming and structure so emails are easier to recognise and retrieve over time,
Measuring what happens after the email
Open rates are becoming less reliable due to privacy changes. Click-through rates only show immediate response, not what happens later. It’s important to look at the bigger picture.
CRM platforms such as HubSpot and Microsoft Dynamics allow you to see a contact’s activity across channels in one place. Emails received, website visits, form submissions and event registrations.
Someone may not click straight away. They might return later by searching their inbox, visiting your website directly, or coming back through search.
When you look at engagement at a contact level, you get a clearer view of how email supports participation, levels of self-service, and customer service, not just campaign performance.
A strategic reframing
As inbox behaviour changes, email should be treated as a searchable information resource, not just a one-off message.
When structured well, email can:
- Encourage self-service
- Increase community participation
- Reduce unnecessary enquiries
- Improve accessibility
- Build trust
The goal isn’t just to inform, It’s to help people take action and access services more easily. So, worry less about open rates, and more about structuring your emails for searchability and action.