Inbix

Agentic Inbox is a self-hosted email client from Cloudflare that runs on Cloudflare Workers through the user's Cloudflare account. It receives and sends mail through Cloudflare Email Routing, isolates each mailbox in a Durable Object with SQLite storage, and stores attachments in R2. The web interface supports threaded replies and forwards, rich-text composition, folders, search, and attachments. Its built-in AI agent, using the Cloudflare Agents SDK and Workers AI, can read inboxes, search conversations, draft replies, and send messages through email tools; automatic drafts for incoming mail require explicit confirmation before sending. Deployment provisions Workers, Durable Objects, R2, and Workers AI, and the setup requires Cloudflare Access, Email Routing, Email Service, and a mailbox on the configured domain.

Cloudflare is an internet infrastructure and security platform that provides hosting and delivery infrastructure for applications, agents, websites, and data. Its network combines compute, connectivity, and security at edge locations, with Workers running code close to users and backend data; the company states that its network operates in more than 335 cities and reaches 95% of the world's Internet-connected population within 50 milliseconds. Cloudflare also provides AI crawler controls that let site owners inspect, allow, or block crawler activity, along with pay-per-crawl and a monetization gateway for pages, data sets, APIs, MCP tool calls, files, and search indexes. The described x402 flow uses an HTTP 402 response to request payment, after which an agent pays, retries with proof, and Cloudflare verifies the payment at the edge.

HQBase is an open-source shared email workspace for teams that runs in the customer's own Cloudflare account, keeping the application, mail, and Cloudflare credentials in infrastructure the customer controls. It provides shared mailboxes, team access controls, multi-domain configuration, collaborative drafts, and audit history, along with installation, update, backup, and recovery operations. HQBase also includes an OAuth-protected remote MCP server for controlled access by compatible agents. The project is distributed under the GNU Affero General Public License v3.0 only.

Mailflare is a self-hosted email inbox for custom domains, built on Cloudflare. It provides domain connection and Cloudflare Email Routing setup, personal and shared mailboxes with delegated access, message composition and receiving with attachments and rich formatting, and organization tools such as search, folders, stars, snoozing, archiving, spam, and trash. Routing rules can store, forward, reject, or categorize incoming messages. When deployed to Cloudflare, Mailflare uses Email Routing for inbound delivery, Cloudflare's email service for outbound messages, a D1 database for mail data, and an R2 bucket for attachments. It can also run as a Docker container using SQLite and local files, with a built-in SMTP listener or a Cloudflare relay Worker for inbound mail and an SMTP relay or Cloudflare Email Sending for outbound mail. The project also includes account and permission management, API keys, webhooks, audit logs, backups, import and export, contacts, and sender blocking.