You can use Google Lighthouse by running audits on web versions of your emails or landing pages linked within your emails. Here’s a simplified process:
1. Open Chrome DevTools: Right-click on your web page or email template opened in a browser and select "Inspect". 2. Run Lighthouse: In the DevTools panel, navigate to the Lighthouse tab and run an audit. 3. Analyze Results: Review the audit results and identify areas for improvement.