GIF-animation
A GIF animation is an image file format that supports multiple frames displayed in sequence, creating the appearance of movement when embedded in an email or web page. GIF animations have been supported in email for decades and remain the most reliable way to add animation to email messages, as they are simply image files that do not require any additional rendering support beyond standard image display.
In email marketing, GIFs are used to demonstrate products in motion, add visual energy to a header section, illustrate a process or sequence, or simply make a campaign more visually engaging. They are particularly effective for product-led companies that want to show a feature in action without requiring the recipient to visit a video or a website. A well-chosen GIF communicates something in two seconds that copy alone might take a paragraph to convey. Even in clients that do not support animation, such as some versions of Outlook, a GIF will display as its first frame, making it a gracefully degrading format.
For B2B email marketers, GIFs should be used purposefully rather than as decoration. An animated GIF that adds real communicative value, demonstrating a workflow, showing before and after states, or animating a data visualisation, earns its place. One that loops a busy animation in the header purely for visual effect adds noise without value and may distract from the message. Keep file sizes small, aiming for under 1MB and ideally much less, to avoid slow loading and excessive data usage on mobile connections.
Do all email clients support GIF animations?
Most modern email clients support GIF animations, including Gmail, Apple Mail, Yahoo Mail, and mobile email apps on iOS and Android. Microsoft Outlook 2007 through 2019 does not support GIF animation and will display only the first frame. This means you should design your GIF so that the first frame is a meaningful, standalone image that communicates the key message even without animation. Outlook 2021 and Microsoft 365 do support GIF animation.
How large should a GIF animation be for email?
Keep animated GIFs as small as possible while maintaining acceptable visual quality. A target of under 1MB is a good starting point, with 500KB or less being even better for mobile users. Techniques for reducing GIF file size include limiting the number of animation frames, reducing the number of colours in the palette, cropping to only the animated area rather than animating a full-width image, and using optimisation tools to compress the file before embedding.
Are GIFs better than videos in email?
For most email clients, yes. Embedded video in email is poorly supported and most clients display a static image fallback or simply do not render the video at all. GIFs work everywhere that images work and provide a good approximation of video-like animation for simple demonstrations and product showcases. For longer or higher-quality video content, the best practice is to embed a static thumbnail image with a play button that links to the video hosted on a video platform, rather than trying to embed the video directly in the email.