Agent-native email infrastructure

Turn every inbox into a readable file tree

EmailFS receives mail, normalizes it to Markdown, stores threads as folders, and exposes the result through REST and MCP. Your agents get clean context without SMTP, IMAP, MIME parsing, or OAuth client work.

Start for free Read the docs

Markdown

messages

REST + MCP

access

JWT + API keys

auth

~/inbox/thread-7721/message.md

---
from: "alex@dev.com"
to: "system@emailfs.io"
subject: "Deploy Notification"
date: 2024-05-20T14:30:00Z
labels: ["urgent", "ci-cd"]
---

# Deployment Successful

The build for **production-v2** has finished.
All tests passed in 4m 22s.

- Artifact: `emailfs-core-bin`
- SHA: `7f8a92b`

View logs at https://ci.emailfs.io/7f8a92b

Route mail

Point MX records at EmailFS and route inbound messages into your account.

Store as files

Threads become stable folders with Markdown messages, metadata, and attachments.

Connect agents

Use MCP for agent tools or REST for your own workers, scripts, and apps.

Markdown-first

Stop parsing messy HTML. Every incoming email is normalized to clean Markdown for easy ingestion and LLM processing.

MCP + REST API

First-class support for the Model Context Protocol. Connect your AI agents directly to your inbox with secure, scoped tools.

Thread folders

Hierarchical structure out of the box. Navigate your communications like a nested directory tree in your terminal.

Built-in auth split

The web UI uses your login session. Local agents and external clients use product-scoped EmailFS API keys.

Authorization: Bearer emailfs_live_...

GET /v1/acme.com/inbox
GET /v1/acme.com/thread/inbox/2026-06/...

Agent-ready context

Agents can list domains, read threads, fetch individual messages, label work, and check usage without handling email protocols.

MCP tools
- list_domains
- list_inbox
- get_thread
- get_message
- label_thread
- get_usage

Simple, transparent pricing

Inbound is always free. Pay only when you need outbound, extra domains, or team access.Save ~22% with annual billing.

Personal

Free

$0/mo

1 custom domain
Unlimited mailboxes
1 GB storage
Inbound email only
REST + MCP access
API tokens

Start for free