Hey Big Day is a UK-based platform offering customizable wedding websites designed to simplify the planning process. Their user-friendly service allows couples to create personalized websites, manage guest lists, and send digital invitations with ease. Features include RSVP tracking, seating planners, and integration with gift registries. The platform is mobile-friendly and offers multilingual support, making it accessible for a diverse range of couples. While the basic website creation is free, publishing the site and accessing premium features require a subscription.