Some best practices for using HTML in emails include:
Keep it simple: Overly complex HTML can cause rendering issues across different email clients. Use inline CSS: External stylesheets are often stripped out by email clients, so inline CSS ensures your styles are applied. Optimize images: Use properly sized images and include alt text for better accessibility and faster loading times. Include a plain-text version: Always include a plain-text version of your email for recipients who prefer it or for email clients that do not support HTML emails.