---
title: "AI-native email infrastructure for businesses, developers, and agents"
description: "Built for scale, privacy, and control, with everything you need to send and receive emails for businesses, developers, and AI agents. Everything email should have had from day one."
url: "https://nextmail.sh/"
---

The first AI-native email infrastructure

# AI-native email for businesses, developers, and agents.

Built for scale, privacy, and control, with everything you need to send and receive emails for businesses, developers, and AI agents. Everything email should have had from day one.

[Open mail](https://nextmail.sh/mail/inbox) [Get Started](https://nextmail.sh/signup.md)[Learn more](https://nextmail.sh/#features)

Park Studio Business

Inbox

Everything addressed to you, minus spam.

Homepage copy, final round

9:41

Sarah Chen

Invoice 2214 for August

9:12

Northwind Cloud

Can we move Thursday?

8:55

Omar Haddad

Signed contract attached

8:30

Mia Chen

Your code is 481 207

8:02

Lumen

Photos from Saturday

Yesterday

Leo Martin

Your flight to Lisbon is confirmed

Yesterday

Skyline Travel

Quarterly numbers are in

Wed

Ken Ito

Coffee next week?

Tue

Priya Raman

What your clicks call

Open a thread, star it, search or reply.

Products that already send and receive their mail on Nextmail.

- [Modulify](https://nextmail.sh/customers/modulify.md)
- [Envless](https://nextmail.sh/customers/envless.md)
- [Ip2Geo](https://nextmail.sh/customers/ip2geo.md)
- [Website](https://nextmail.sh/customers/website.md)
- [Wallpapppers](https://nextmail.sh/customers/wallpapppers.md)
- [Revgraphs](https://nextmail.sh/customers/revgraphs.md)
- [BetterFileTransfer](https://nextmail.sh/customers/betterfiletransfer.md)
- [Love Envelope](https://nextmail.sh/customers/love-envelope.md)

Everything included

## Everything email should have. Nothing it shouldn't.

Search, rules, snoozes, templates, tracking, scheduling and an AI that has read every thread.

End-to-end encrypted

OpenPGP keys made in your browser. Mail to a published key is sealed before it leaves.

readable where it lands

Wire transfer approved, details attached.

you tls nextmail.sh starttls? them

Multiple domains

Add as many as you own, subdomains too, and every address on them is real.

acme.com acme.dev team.acme.com hey.acme.io

Merged inboxes

Read every mailbox in one stream, or split to a single address.

hello@acme.com

me@acme.dev

support@acme.io

one inbox

AI first

A chat that can act on your mail, drafts in your own voice, and agents over MCP.

I hope this email finds you well. I wanted to reach out regarding the proposal we discussed last week. Our approach is designed to be robust, scalable, and straightforward to adopt. Moreover, it is not just about the tooling, but about the outcomes it enables for your team. In conclusion, please do not hesitate to reach out if you have any questions.

70% likely written by a model

Team members

Share an address with a teammate and it lands in their own inbox.

share with sarah@acme.com

SA

AL

NI

have access

Security and the checks around it

SPF, DKIM and DMARC on every message, and look-alike domains called out.

receipts@ stripe.com

SPF DKIM DMARC

verified sender

All of it in one place

Mail, aliases and a sending API in one product. Priced per workspace, not per seat.

$ 0 1 domain, up to 1,000 addresses

[+83 more, documented in full](https://nextmail.sh/features.md)

AI-first, agent-ready

## Ask your inbox. It already knows.

It answers from mail you already have and drafts in your voice. Your agent gets the same mailbox over MCP.

Ask your inbox

Ask in plain language, and it can open, label, archive and answer threads for you.

who is chasing me about the invoice?

Nina, twice this week. The second one is marked urgent.

what did Sarah say about pricing?

Read 4 threads with Sarah

She agreed to the renewal, asked to revisit seats in Q1.

MCP server

Point Claude or any MCP client at api.nextmail.sh/mcp to read, search, label and send.

MCP API SDK CLI

{ "mcpServers": {

"openemail": {

"url": "https://api.nextmail.sh/mcp"

} } }

It learns you

A profile built from your sent mail, so every draft opens and signs off like you.

sentence length

greeting

formality

sign-off

52 signals, learned from your sent mail

Knowledge base

Give the AI your notes, files and pages. Every draft and answer draws on them.

Acme renews on 14 March 3 threads

Sarah signs off on billing 11 threads

Legal reads every contract first 6 threads

You never send before 9am 400 sent

Agents on the platform

Tasks triage and draft as mail arrives, and ask before they change anything.

Summarised 14 overnight threads

Labelled 6 as invoices

Drafted 3 replies for review

Flagged 1 look-alike domain

Subjects & drafts

Write the body and get the subject, or give it one line and get the whole email.

subj Kickoff moved to Tuesday 10am

written from the body you already typed

Anything you can do in Nextmail, an agent can do. Same account, same scope.

One platform

## Cancel the stack. Keep the mail.

A mailbox, a team plan, the fast client, aliases, who opened it and your product's sending API. Six invoices, six logins, one job.

Subscription Job

- Gmail (cancelled) mailbox
- Google Workspace (cancelled) team plan
- Superhuman (cancelled) fast client
- Fastmail (cancelled) aliases
- Mailchimp (cancelled) open tracking
- Resend (cancelled) transactional mail

Instead

Nextmail

Who it is for

## One mailbox. Four ways in.

The same product underneath, described for the person reading it. Start wherever you recognise yourself.

### Business

Addresses for everyone, members never counted as seats.

### Developers

The same mailbox over an API, an SDK, a CLI and MCP.

### AI & agents

An inbox your agent can work, with access you approve.

### Personal

A free address at openemail.uk, with the client behind it.

What you stop paying

## Compare the bill. Move the slider.

The mailboxes multiply by headcount and the sending tools by volume. We sell four plans, so the tenth teammate costs what the second did.

People

most mailboxes bill per seat; two or more needs Starter

5 people

Domains

ours steps at 1, 50 and 500; Proton, HEY, Resend, Fastmail, Postmark and Mailgun charge more

1 domain

Sent a month

Sending APIs and Mailchimp bill by volume; mailboxes cap it per seat

5,000 sent

Addresses

unlimited on every plan of ours; Proton and Fastmail tie them to seats

12 addresses

You save with Nextmail

$172 a month against Superhuman $1,710 a year

Mailchimp Essentials · campaigns

$13 /mo $156/yr

Postmark Basic · sending API

$15 /mo $180/yr

Mailgun Basic · sending API

$15 /mo $180/yr

SendGrid Essentials · sending API

$19.95 /mo $239/yr

Nextmail Starter

$20 /mo $210/yr

Resend Pro · sending API

$20 /mo $240/yr

![Fastmail](https://nextmail.sh/brands/fastmail.svg) Fastmail Business Standard

$30 /mo $300/yr

Proton Mail Mail Essentials

$39.95 /mo $419/yr

![Google Workspace](https://nextmail.sh/brands/google-workspace.png) Google Workspace Business Starter

$42 /mo $420/yr

HEY for Domains per person

$58 /mo $696/yr

![Superhuman](https://nextmail.sh/brands/superhuman.png) Superhuman Starter + Workspace

$192 /mo $1,920/yr

Most of these sell one piece of the job: a mailbox, a sending API, a campaign tool or an app that needs a mailbox from somebody else. The Nextmail price is the whole job, with mailboxes on your own domains, sending and receiving, the full API and the AI assistant on every plan. So this is not even a fair comparison: every other bar buys one piece, and ours buys all of it.

[See the full comparison](https://nextmail.sh/compare.md)

## Your inbox, on your own terms.

[Open mail](https://nextmail.sh/mail/inbox) [Get Started](https://nextmail.sh/signup.md)

[15 minutes with Nextmail Free Video call, at a time you choose Book a 15-minute call](https://nextmail.sh/book/bfzli)

Solutions

[Business](https://nextmail.sh/business.md)[Developers](https://nextmail.sh/developers.md)[AI & agents](https://nextmail.sh/agents.md)[Personal](https://nextmail.sh/individuals.md)

Nextmail

[Pricing](https://nextmail.sh/pricing.md)[Features](https://nextmail.sh/features.md)[Download](https://nextmail.sh/download.md)[Compare](https://nextmail.sh/compare.md)[Migrate](https://nextmail.sh/migrate.md)[Customers](https://nextmail.sh/customers.md)[Security and scale](https://nextmail.sh/security.md)[About](https://nextmail.sh/about.md)[Contact](https://nextmail.sh/contact.md)[Privacy Policy](https://nextmail.sh/privacy.md)[Terms of Service](https://nextmail.sh/terms.md)[Uptime guarantee](https://nextmail.sh/sla.md)

Resources

[Documentation](https://nextmail.sh/docs.md)[API reference](https://nextmail.sh/docs/api/reference.md)[TypeScript SDK](https://nextmail.sh/docs/sdk.md)[Python SDK](https://nextmail.sh/docs/python.md)[Ruby SDK](https://nextmail.sh/docs/ruby.md)[PHP SDK](https://nextmail.sh/docs/php.md)[Go SDK](https://nextmail.sh/docs/go.md)[Java SDK](https://nextmail.sh/docs/java.md)[C# SDK](https://nextmail.sh/docs/csharp.md)[Command line](https://nextmail.sh/docs/cli.md)[MCP server](https://nextmail.sh/docs/mcp/overview.md)[Email templates](https://nextmail.sh/templates.md)[Connectors](https://nextmail.sh/connectors.md)[Use cases](https://nextmail.sh/uses.md)[Status](https://status.openemail.uk)

Tools

[AI template generator](https://nextmail.sh/templates/generate.md)[Deliverability checker](https://nextmail.sh/tools/deliverability.md)[BIMI logo checker](https://nextmail.sh/tools/bimi.md)[Email address checker](https://nextmail.sh/tools/email-check.md)[Temporary email address](https://nextmail.sh/tools/temp-mail.md)[DMARC record generator](https://nextmail.sh/tools/dmarc.md)[Email cost calculator](https://nextmail.sh/tools/cost.md)[Team working hours](https://nextmail.sh/hr.md)

Migrate

[Resend](https://nextmail.sh/migrate/resend.md)[SendGrid](https://nextmail.sh/migrate/sendgrid.md)[Postmark](https://nextmail.sh/migrate/postmark.md)[Mailgun](https://nextmail.sh/migrate/mailgun.md)[Mailchimp](https://nextmail.sh/migrate/mailchimp.md)[Gmail](https://nextmail.sh/migrate/gmail.md)[Outlook](https://nextmail.sh/migrate/outlook.md)[![Google Workspace](https://nextmail.sh/brands/google-workspace.png)Google Workspace](https://nextmail.sh/migrate/google-workspace.md)[iCloud Mail](https://nextmail.sh/migrate/icloud.md)[Yahoo Mail](https://nextmail.sh/migrate/yahoo.md)[Proton Mail](https://nextmail.sh/migrate/proton.md)[Zoho Mail](https://nextmail.sh/migrate/zoho.md)[AOL Mail](https://nextmail.sh/migrate/aol.md)[![Fastmail](https://nextmail.sh/brands/fastmail.svg)Fastmail](https://nextmail.sh/migrate/fastmail.md)[HEY](https://nextmail.sh/migrate/hey.md)

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