This feature should allow users to easily insert GIFs directly into the body of their emails through an intuitive interface. The tool should include a built-in library of pre-approved, royalty-free GIFs categorized by themes and emotions, facilitating quick searches and selection.

Additionally, users should have the capability to upload and embed their own GIF files. The implementation must ensure that the GIFs display correctly across all major email clients and devices, maintaining both image quality and animation without increasing email loading times significantly. It should also include compatibility checks to warn users when an embedded GIF might not display properly in certain email environments. Advanced options for resizing and aligning GIFs within the email layout would further enhance customization. Integration with existing content management systems for easy access and management of GIFs would be highly beneficial, ensuring a seamless user experience.