How to Avoid Common Email Template Mistakes

Even small mistakes in your email templates can quietly wreck your campaigns. A broken link, an image that won’t load, or a layout that looks messy on mobile can turn readers away. Many of these issues come from subtle template errors that go unnoticed until it’s too late.

In this guide, we’ll show you how to catch and fix these common mistakes and use Mailmodo tool to make sure every email you send looks flawless and performs at its best.

Some common email template mistakes

Here are some of the most common template mistakes to watch for:

• Broken or outdated links that frustrate users and kill conversions.

• Oversized images that slow load times or get clipped by Gmail.

• Unresponsive designs that don’t adapt to mobile devices.

• Fonts and CSS are not supported across clients, especially Outlook.

• Dark mode display problems, like logos disappearing or colors inverting.

• Accessibility gaps, such as missing alt text or low contrast.

• Low-quality AI-generated content that feels vague, biased, or inconsistent.

How to avoid template mistakes

Mailmodo’s Template Suggestions tool is a built-in QA assistant that helps you with your email campaigns. Here is how you can access this feature

1. Build your email in the Mailmodo Editor.

2. Click the bulb icon to run Template Suggestions. It organizes its findings into three categories:

• Errors: These are the must-fix issues that can actually break your email or make it stop working properly.

• Warnings: These aren’t high-priority issues, but they can make your email look off or behave strangely across different clients.

• Improvements: These are handy tips to make your emails more engaging and accessible.

3. Click on each suggestion to jump directly to the problem area and fix it one by one.

4. Hit Refresh to re-scan and confirm that all issues are resolved.

Final thoughts

An email that technically “works” isn’t the same as one that drives results. Broken links, clipped content, or poor readability quietly erode trust and engagement.

With Mailmodo’s Template Suggestions tool, you get peace of mind knowing every email is fully optimized before it reaches your audience.