BuilderJS is a self-hosted, embeddable drag-and-drop HTML email builder and page builder you drop into your own SaaS, CRM, newsletter tool, or marketing platform. Pure JavaScript, JSON-first, framework-agnostic, ships as a single ~1 MB bundle. No npm. No Composer. No Docker. No vendor lock-in. No “Powered by” badge. Your data stays on your server.
Give your end users a Mailchimp / Stripo / Beefree-style WYSIWYG email editor — without paying per-seat SaaS fees, without shipping customer data to a third party, without re-inventing a year of editor work. Trusted by hundreds of CodeCanyon authors as the editor inside their own email marketing platforms, newsletter tools, ESPs, and landing page builders.