Animated GIF in Email Signature

An animated GIF in an email signature is a small looping animation embedded as an image. Common uses include subtle logo animations, brief product demos (showing a UI in motion), promotional banners with rotating content (multiple offers cycling through one image slot), and seasonal accents. Animated GIFs render correctly in most modern email clients (Gmail, Apple Mail, Outlook on the web, mobile clients) but Outlook desktop displays only the first frame, which is why animated GIFs in signatures must remain visually correct as a still image of the first frame. File-size discipline is critical: a 500KB GIF inflates email weight, slows loading on cellular connections, and may trigger spam filters when sent at high volume. Best practice is to compress GIFs to under 100KB, keep the animation loop short (2-4 seconds), use moderate motion to avoid distraction, and ensure the first frame is acceptable as a static signature element for Outlook desktop recipients.