DontSendMeACard

DontSendMeACard is an online platform that allows users to send e-cards for various occasions by making a donation to a chosen charity in lieu of sending physical greeting cards. Users can personalize e-cards with messages and photos, and share them via email or social media platforms like WhatsApp and Messenger. The service aims to reduce paper waste and support charitable causes.

DontSendMeACard is a strong match for GreetsU. It offers a platform for sending e-cards, allowing users to select from various templates (card-selection-and-templates-library, template-gallery), personalize them with messages and photos (personalization-editor, photo-upload), and share them via unique URLs, email, WhatsApp, and Messenger (shareable-link-and-delivery, social-sharing-widgets, copy-to-clipboard). The platform also supports user accounts for managing sent cards (user-accounts-and-saving) and categorizes cards by occasion (occasion-categories). While it doesn't explicitly mention live preview animations or music/audio, the core functionality aligns very well with GreetsU's description.