Hand-coding HTML emails means wrestling nested tables and Outlook quirks for hours; Colspan turns that work into dragging ready-made blocks onto a canvas and exporting code that holds together in Gmail, Outlook, and Apple Mail. The component catalog holds 78 blocks grouped into Menu, Header, Content, Feature, Call to Action, E-Commerce, Transactional, and Footer sets, so newsletters, receipts, and promotional campaigns all start from structured pieces instead of a blank file. You edit text inline with rich formatting and Google Fonts, arrange blocks in a synchronized component tree, and adjust each row for stacking order and visibility on mobile. Desktop and mobile previews render side by side, and the preview stays isolated from the editor chrome, so what you check is what recipients open. Finished designs export as responsive HTML with inline styles, or as JSON you can store, version, and re-import later in replace or append mode. Import validation and sanitization guard templates received from teammates or clients before they enter your workspace. Your work saves automatically in the browser and reloads where you left off, and undo and redo cover every edit during experimentation. Agencies can host the editor on a client-facing domain, marketing teams can produce campaign emails without developer time, and product teams can standardize receipts and notifications as reusable templates. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.