Make sure your emails work properly before they reach your audience. Our email testing service checks campaigns and templates across major email clients, devices and screen sizes to identify rendering, layout and usability issues before you hit send.
Email Testing & QA Services
Catch email problems before your customers do
An email can look perfect in one inbox and completely different in another. Outlook, Gmail, Apple Mail and mobile devices can all interpret HTML differently, creating problems with layouts, fonts, imagery, spacing and calls to action.
Our email testing service checks your campaigns and templates across different environments to identify problems before launch. We review rendering, responsive behaviour, links, imagery and usability, helping you deliver a more consistent experience across inboxes and devices.
Why choose Email Squad for email testing & QA?
Email testing isn’t just about checking whether an email opens. Small rendering problems can affect how your campaign looks, how easy it is to understand and whether someone can actually interact with it.
We combine specialist email development knowledge with thorough testing across major email clients and devices. We’ll identify rendering and usability issues, explain what’s causing them and help get your email working properly before it reaches your audience.
Our step-by-step approach
Every great email starts with understanding. We get to know your brand, audience, goals and platform before production begins.
From one-off campaigns to complete customer journeys, we design beautiful email experiences that are built around your brand and objectives.
Our team transforms approved designs into responsive, production-ready emails that work seamlessly across your chosen platform and major inboxes.
Every email is thoroughly tested, refined and quality checked before we package everything up and deliver production-ready files, ready for your team to send.
Why choose Email Squad
Designed from scratch
Built around your brand, your audience and your campaign goals. No generic templates. No copy-and-paste creative.
Fast turnaround
Campaign deadlines don’t wait. We plug into your team and deliver beautifully crafted emails without slowing projects down.
Ready for every inbox
Responsive HTML, platform-ready builds and thorough QA before every delivery.
Ready to scale
Multiple campaigns, languages, versions and audiences handled properly, without adding pressure to your team.
Featured work
From promotional campaigns to customer journeys, explore a selection of email projects showcasing our approach to design, development and production across different industries.
Email Testing & QA FAQs
What is an email testing service?
An email testing service checks how your email campaigns and templates display and function across different email clients, devices and screen sizes before they are sent.
Why do emails need to be tested before sending?
Different email clients interpret HTML and CSS differently. Testing helps identify rendering, layout and usability problems that might not appear in your own inbox.
Which email clients do you test emails in?
We can test emails across major email clients and environments including Outlook, Gmail, Apple Mail and popular mobile devices.
Can you test existing HTML emails?
Yes. Send us your existing HTML email or template and we can test it for rendering, responsive behaviour and usability issues.
Do you test emails on mobile devices?
Yes. We check how emails behave across different screen sizes and mobile environments, including layouts, typography, imagery and calls to action.
Can you fix the issues you find during testing?
Yes. As well as identifying problems, we can make the necessary HTML and design changes to resolve rendering and usability issues.
Can you test Mailchimp, Klaviyo and HubSpot emails?
Yes. We can test campaigns and templates created for Mailchimp, Klaviyo, HubSpot and other major email marketing platforms.
Can you fix Outlook email rendering problems?
Yes. Outlook is one of the most common sources of HTML email rendering problems. We can diagnose and fix Outlook-specific issues to help your emails display more consistently.
Trusted by industry-leading
brands & agencies
When the brief lands and the send date’s fixed, we make it look easy. From design and HTML development to testing and QA, we deliver beautifully crafted emails without the production headache.
Need help with email testing & QA?
Whether you’re preparing a new campaign, testing a reusable template or dealing with inconsistent rendering across different inboxes, we can help identify and fix the issues before you hit send.









