Inspect helps you catch rendering issues, broken elements, and deliverability risks before you send your email.

This guide walks you through running your first test in under 5 minutes.

Choose Upload Method

Select New Test. You can start a test in three ways:

1. Send from your ESP (recommended if feasible, best for long-term workflow)
2. Paste your HTML directly (simplest for first time)
3. Upload from a URL

Best practice: If you're testing a production email, use the exact HTML you plan to send.

Step 1: Details

Enter a Test Name - this can be whatever you want, just make sure it is identifiable.

If you are using folders, you can select a folder to save this test into. This is optional, but helpful if you have many teams or campaign types that you need to organize.

Step 2: Choose Previews

Select which previews you want to include. We recommend starting with all previews, but you can also:

• Select an existing preview profile (if someone on your account has created one).
• Click Create new below the dropdown to make your own preview profile containing whichever previews you want.

NOTE: If you set a profile as default, it will become the default profile for all users on your account.

Step 3: Upload Content

• If you selected Send from your ESP, copy the email address and send your email to it from your ESP. Then click Go to tests and wait until your email shows up (approximately 5 minutes).
• If you selected Paste your HTML directly, enter a subject line and the exact HTML you want tested. Then click Test e-mail.
  • You have the option to upload the HTML from Google Drive, OneDrive, or Dropbox - just click the icon below the HTML field.
• If you selected Upload from a URL, type in your subject line and enter the URL that links to your email. Then click Test e-mail.

Review Your Email

Once your email shows up, click on it and review the results.

NOTE: If you are on the Basic subscription plan, you will only have access to the Previews tab.

Previews

Shows visual renderings of your email across devices and inboxes. Look for layout shifts, broken formatting, or missing elements.

Fix Issues

Automated checks for common issues:

• Broken links
• Missing images
• Accessibility concerns

Clicking on each issue will highlight it on a render of your email. You can also open the HTML and see the issue highlighted there.

Code Analysis

Flags anything in your HTML that will not be supported (or only partially supported) by important providers and clients. Use the filters to pinpoint certain inbox providers and issue types.

Spam Check

Shows how your content was filtered by major mailbox providers and B2B spam filters.

This is not based on your reputation - we send it from one of our high-reputation IPs to isolate the deliverability signal to your content.

Other Features

• Click Export to export the screenshots or an outline of what was uncovered on the Fix Issues tab.
• Click Share to generate a link that anyone can access to see the results of your test.

Final Step: Fix Issues and Re-Test

Based on what you uncover, make updates to your HTML or template, then run another test to confirm your fixes.

Common workflow: Run test → Identify issues → Fix → Re-test → Send