What are some common challenges HTML Email Developers face when creating emails for multiple email clients?

HTML Email Developers often encounter challenges ensuring that emails display consistently across various email clients and devices. Each client (like Outlook, Gmail, or Apple Mail) can interpret HTML and CSS differently, leading to formatting issues. Developers must follow strict coding standards, often using table-based layouts and inline styles, and conduct thorough testing using tools or actual devices. Staying updated on client-specific quirks and having a good workflow for revisions are essential to overcoming these challenges.