Email clients do not all use the same HTML rendering engine. Some versions of Outlook apply specific rules to widths, margins, fonts, background images and buttons.

Before sending

• Use Kiliba's desktop and mobile previews.
• Send a test to the email clients actually used by your audience.
• Keep the structure simple and do not place essential information only in an image.
• Add alternative text to important images.

A minor visual difference does not necessarily mean that the email is broken. Always check that text, links and calls to action remain readable and usable.