HTML Composer for Gmail

Insert custom HTML into Gmail compose and reply windows, with live preview, automatic CSS inlining and a template library.

Write emails in your own HTML — right inside Gmail. HTML Composer adds an Insert HTML button to every Gmail compose and reply window. Paste or write your HTML, check the live preview, and insert it in one click. Your CSS is inlined automatically so the design holds up in your recipients' inboxes. FEATURES • Live preview at desktop and mobile width • Automatic CSS inlining for email-safe styling • Insert at cursor or replace the message (keeps your signature and quoted reply) • One-click Undo • Template library — save, search and reuse your HTML emails • Email checks for broken images, unsupported code and Gmail's size limit • Shortcut: Alt+Shift+H · Light and dark mode PRIVACY Everything stays in your browser. Your HTML and templates are stored only on your computer and never sent anywhere. The extension does not read your emails or account data. Developed by Mandeep Singh · itsmandeep.in