FounderMail

Overview

FounderMail is an email hosting platform developed by Bison Labs Limited that enables users to run business mail directly through their existing Cloudflare accounts. The service installs a lightweight Cloudflare Worker relay into the user's account to handle delivery and sending, while mailbox storage and processing are handled on FounderMail's infrastructure. It is designed to provide custom-domain email infrastructure for both human team members and autonomous software agents.

Key Features

• Cloudflare Worker relay — Routes inbound and outbound mail through a lightweight proxy inside the user's Cloudflare account, preserving native DNS, SPF, DKIM, and DMARC records.
• Agent and MCP support — Offers two dedicated Model Context Protocol servers and an OAuth-secured REST API to let automated systems read mail, send messages, or manage organization settings.
• Granular agent scopes — Separates reading and sending privileges to ensure automated agents can be restricted to read-only access on designated mailboxes.
• Keyboard-first web interface — Provides a unified inbox interface for personal and shared addresses featuring shortcut navigation and command-bar controls.
• Flat storage-based pricing — Charges fixed monthly rates based strictly on aggregate mail storage capacity rather than per-seat subscriptions.
• Mailbox export capabilities — Allows administrators to download complete mailbox histories at any time as standard mbox files via the management console.

Who It's For

FounderMail is built for technical founders, developers, and early-stage companies that already host their domain DNS and serverless workloads on Cloudflare. It is specifically targeted at engineering teams building autonomous AI agents that require programmatic email interaction and dedicated mailbox identities. It also serves organizations operating multiple domains and shared inboxes that want to avoid per-seat software pricing.

Notable Strengths

FounderMail stands out for its native integration with AI workflows, providing dedicated MCP servers, machine-readable documentation, and distinct read/send scopes for automated agents. Its non-seat pricing structure allows organizations to provision unlimited domains, addresses, team members, and software agents under a shared storage quota. Furthermore, by running the sending and receiving relay inside the customer's Cloudflare account, domain reputation and core authentication records remain directly in the owner's hands.