Here’s a step-by-step guide to performing a compatibility check: 1. Create a Test Email: Develop a test version of your email with all the elements and styles you plan to use. 2. Use Testing Tools: Utilize tools like Litmus or Email on Acid to see how your email renders across different clients. 3. Manual Testing: Send test emails to different email clients and devices to manually check the rendering. 4. Review and Adjust: Identify any issues and make the necessary adjustments to your code.