123Greetings

123Greetings is a comprehensive online platform for sending free e-greeting cards for a wide array of occasions and holidays. It features a large collection of animated and static cards, allows users to sign up for accounts to manage greetings, and provides various sharing options including email and social media. The platform also includes a 'Studio' for artists to upload their own e-cards.

123Greetings is a well-established e-card platform that directly competes with GreetsU. It offers a vast library of cards for various occasions, allows personalization (though the extent of customization like adding images or changing backgrounds isn't explicitly detailed on the main page, it's implied through the 'Studio' feature for artists), provides sharing options, and supports user accounts. The site clearly categorizes cards by occasion and offers social sharing widgets and copy-to-clipboard functionality. The 'Studio' section also suggests a level of personalization and content creation.