Formspree is a platform that lets users submit forms using HTML, CSS, and Javascript. The forms can be customized using Javascript, CSS, and HTML, and the platform securely stores user data. Formspree also sends email notifications and filters spam. The platform has built-in plugins for services like Stripe, Google Sheets, Mailchimp, and Slack, which lets users efficiently handle their workflow. Formspree also allows users to collect leads and payments or donations through custom API.