Email Deliverability
Why Inline CSS Tables are Essential for Gmail & Outlook
Modern web browsers parse standard external CSS scripts effortlessly. However, top-tier global email clients like Gmail and Outlook enforce strict security sandboxing that automatically discards style sheets, head blocks, and modular classes. To safeguard campaign layout structures across varying viewports, email assets must be compiled directly into standard legacy elements wrapped completely inside absolute HTML table tags utilizing flattened inline-style definitions.