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Agentic UI Kit
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Blueprint

Mail Client

Superhuman and Gmail style team email client: a three-pane inbox with a folder and label sidebar, a virtualized conversation list (unread, starred, labels, snooze, attachments) and a reading pane; a conversation view with folded earlier messages, trimmed quotes, attachments, a summary, smart reply suggestions, an inline reply and internal team notes with @mentions; a compose window (docked, minimizable, or full screen) with recipient chips and autocomplete, a rich text editor, attachments, signatures, schedule send, undo send and saved drafts; search with operators, filter fields, a date range and saved searches; contacts; settings for accounts, signatures, labels, filter rules, keyboard shortcuts and density; and a command palette with a keyboard shortcuts sheet (j and k, e to archive, r to reply, c to compose, / to search).

Screens
3
Framework
Next.js App Router · React 19 · Tailwind CSS 4 · shadcn/ui
Variants
Radix UI and Base UI
Install
One command, every screen
New tab Try a theme

What is implemented

  • The App Router routes above, each composed from catalog components. Interactive UI states such as menus, dialogs, filters and tabs work as in the viewer.
  • Sample data that ships with each component, so the screens render without a backend.
  • Light and dark themes.

What you supply

  • Your data: API routes or a backend in place of the sample data. No backend is included.
  • Authentication and authorization.
  • Persistence: database, file storage and any server-side state.
  • Business rules and server-side validation.

Install

Radix UI project
npx shadcn@4.17.0 add @agentic-ui/blueprint-mail-client
Checked: installs and builds in a clean Next.js project.
Base UI project
npx shadcn@4.17.0 add @agentic-ui/blueprint-mail-client
Checked: installs and builds in a clean Next.js project.

Your project must be connected to the private registry first: installation guide.

Components it uses