Subject Line: Ensure that it is engaging and free of any errors. Content: Check for spelling and grammatical errors, as well as overall readability. Links: Verify that all hyperlinks work correctly and lead to the intended destination. Images: Ensure that images load correctly and have appropriate alt text. Rendering: Test how the email appears in different email clients and devices. Personalization: Ensure that personalization tokens are working correctly and displaying the right information. Call-to-Action (CTA): Verify that CTAs are clear and functional.