Domain email setup
Connect a domain you already own and receive the DNS records needed for DKIM, MX, custom MAIL FROM/SPF, and DMARC, with live verification checks.
FutureMail
FutureMail provides email hosting on a domain you already own, with a web inbox, unlimited addresses, and team access. Its REST API, CLI, remote MCP server, and scoped agent inboxes let software and AI agents send, read, search, and wait for email.
Email hosting for people and AI agents
FutureMail is an email-hosting service for domains you already own. It combines a web inbox for people with domain-based addresses, aliases, threading, search, and support for catch-all and plus-addressing routes.
The service also exposes email operations to software and AI agents through a REST API, command-line interface, remote MCP server, and Resend-compatible API. Agent inboxes use mailbox-scoped keys, allowing an agent to send, read, search, and wait for messages without receiving broader organization access.
Capabilities
Flexible addresses
Create unlimited addresses and aliases, including catch-all and plus-addressing routes, on your connected domains.
Fast web inbox
Use a keyboard-first web inbox with threading and Gmail-style search for day-to-day email management.
Agent inboxes
Give each AI agent a separate mailbox and scoped API key. Agents can send, read, search, and wait for incoming messages.
Developer interfaces
Access the same email data through the REST API, fm CLI, remote Streamable HTTP MCP server, or a Resend-compatible API.
Sending and delivery tools
Use signed webhooks with retries, templates, scheduled and batch sends, delivery timelines, open and click tracking, and a suppression list for supported production workflows.
Practical uses
Small-business communication
Set up addresses such as hello@, support@, or invoices@ on a business domain and manage conversations from a shared web inbox without per-seat pricing.
AI agent workflows
Create separate mailboxes for signup, research, or automation agents so each agent can work with a dedicated address and narrowly scoped key.
Transactional application email
Use the API, CLI, or Resend-compatible endpoint to send application messages such as receipts, notifications, sign-in codes, and replies from a domain you control.
Email-based verification
Let an automation wait for an incoming verification email, extract its OTP or links, and continue a task without exposing an entire organization mailbox.
Programmatic delivery
Use scheduled sends, batch requests, templates, webhooks, and delivery status information when building email features into an application.
Pros and Cons
Pros
- Combines a human web inbox with API, CLI, and MCP access to the same email data.
- Supports separate agent mailboxes with scoped API keys and automatic OTP and link extraction when waiting for email.
- Includes unlimited domains, addresses, and aliases on the stated Pro plan.
- Provides domain setup checks and production-oriented delivery features such as webhooks, scheduling, batching, and suppression handling.
Cons
- A domain you already own is required; FutureMail does not sell domains.
- The service is paid-only, with no free tier or trial.
- The first 14 days limit new accounts to 1,000 recipients per day while sending reputation ramps up.
FAQ
Do I need to own a domain to use FutureMail?
Yes. FutureMail requires a domain you already own. After you add it, the service provides DKIM, MX, custom MAIL FROM/SPF, and DMARC records with live verification. Receiving starts when the MX record resolves.
How do I give an AI agent its own mailbox?
Create an agent inbox in Settings, through POST /v1/agents, with the fm CLI, or with the MCP tool create_agent_inbox. The agent receives an address on your domain and an API key scoped to that mailbox.
Can an agent receive email verification codes?
Yes. The waiting endpoint, MCP tool, and CLI can wait for a matching email for up to five minutes and return extracted one-time codes and links when available.
Can I use FutureMail for newsletters or marketing email?
FutureMail is intended for transactional and person-to-person email, such as receipts, notifications, sign-in codes, replies, and conversations. Bulk, marketing, unsolicited email, and purchased lists are not allowed.
What does FutureMail cost?
FutureMail is paid-only. The Pro plan costs $20 per month and includes 50,000 recipients per month, unlimited domains and addresses, agent inboxes, and the API and MCP server. There is no free tier or trial, and plan limits are hard caps with no overage charges.
Quick Facts
- Category
- Email hosting and developer email infrastructure
- Primary users
- Individuals, small businesses, teams, developers, and AI agents
- Domain model
- Bring a domain you already own
- Interfaces
- Web inbox, REST API, fm CLI, remote MCP, and Resend-compatible API
- Plan
- Pro: $20/month; 50,000 recipients/month; hard limits and no overage charges
- Sending policy
- Transactional and person-to-person email; bulk and marketing email are not allowed
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