Kudoboard

Kudoboard is an online platform primarily for creating group eCards and virtual greeting cards for various occasions, especially for employee recognition and celebrations within organizations. Users can personalize cards with messages, photos, GIFs, and videos, and then share them digitally. The platform also offers options to attach gift cards, print boards as books or posters, and display them as slideshows.

Kudoboard offers online group cards for various occasions, aligning well with the core concept of a digital greeting card maker. It provides templates, personalization options (text, photos, GIFs, videos), and sharing capabilities. While it doesn't explicitly mention 'envelope customization' or 'live preview with animations' in the same way GreetsU does, the ability to add various media and deliver the card online suggests a similar interactive experience. The focus is heavily on group cards for employee recognition, but it also offers 1-to-1 cards and covers general occasions, making it a strong match.