Who should use MailKite?

MailKite is a B2B product built for developers, product teams, and AI agent builders.

Yes — there is a free tier, with paid plans for advanced use.

What platforms does MailKite run on?

MailKite runs on the web, the command line, and API.

Is MailKite still active?

Unverified. MailKite has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who develops MailKite?

MailKite is developed by MailKite.

When did MailKite launch?

MailKite first shipped in 2024.

Is MailKite open source?

MailKite has a public GitHub repository.

Back to the index

MailKite

Name: MailKite
Author: MailKite

mailkite.devEmail & inbox

MailKite is an email API and tooling service for developers and the agents they build. It is built around receiving email with a webhook and sending mail with one API, with incoming messages exposed as structured JSON so applications can process them without a mail server.

The service supports both developer workflows and agent workflows. For developers, it shows incoming mail sent to addresses such as [email protected] as a webhook POST and outgoing mail sent through /v1/send. For agents, it presents AI agent inboxes via MCP and an example in which an agent receives a message and sends mail through MCP. MailKite also says it can be set up once and reused across products, and it advertises unlimited domains and unlimited inboxes. The page also states a limit of 3,000 emails per month and 100 emails per day for incoming messages.

MailKite includes official libraries for Node, Python, PHP, Java, Go, and Ruby. In addition to those SDKs, it supports the CLI, plain REST, SMTP, and IMAP. The page also lists integrations and examples across frameworks and platforms such as Next.js, Remix, Nuxt, Express, Hono, Astro, Bun, Cloudflare Workers, Vercel Functions, AWS Lambda, Supabase Edge, Deno Deploy, Django, Flask, FastAPI, Laravel, Symfony, Rails, Sinatra, Spring Boot, cURL, wget, Nodemailer, and IMAP, and it says any MCP client can connect in one snippet.

The product is in beta. It offers a founding rate with 50% off the first year for the first 1,000 customers. The page also links to pricing, docs, blog, sign-in, and start-free pages.

FreemiumWebCLICloud-managedAPI

Visit mailkite.dev

Overview

8 features

In the Email & inbox space, MailKite takes a focused approach. It focuses on handling inbound and outbound email for products without operating mail servers or configuring deliverability infrastructure. MailKite is a B2B product aimed at developers, product teams, and AI agent builders. A free plan is available. MailKite is available on the web, the command line, and API.

MailKite builds and maintains MailKite, and it first shipped in 2024. Key capabilities include inbound webhooks, email sending API, and shared inboxes. It exposes integrations via a public API and an MCP server. MailKite is currently in beta.

Summary written by a language model from the project’s public pages.

Inbound webhooks
Email sending API
Shared inboxes
Custom domains
Agent inboxes
MCP support
SDK integrations
Self-hosted server

Built with & integrations

Framework

Astro

Hosting

Cloudflare

Connectors

APIMCP

Runs on

BrowserCLICloud-managedAPI-only

Detected from

Astro: /_astro/ in the HTML
Cloudflare: cf-ray header · cf-cache-status header

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierGitHub

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed17 Sep · 00:48 UTC
Receiving email is the part nobody warns you about verified via DEV.to articles
Source: DEV.to articles · Open
Indexed4 Sep · 23:18 UTC
I wrote the same email parser three times, and the hard part was making them fail identically verified via DEV.to articles
Source: DEV.to articles · Open
Indexed13 Jul · 18:50 UTC
Parse inbound email to JSON in Node.js – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed13 Jul · 15:12 UTC
Build email automation in n8n that works – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed12 Jul · 13:22 UTC
The Amazon SES Alternative for AI Agents – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed12 Jul · 07:03 UTC
Parse inbound email to JSON in Node.js – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed12 Jul · 04:25 UTC
HubSpot transactional email: route through your domain with MailKite – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed11 Jul · 15:32 UTC
The Unfair Advantage of Using Agents for Email – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed9 Jul · 14:42 UTC
Email as an agent tool: MCP, the SDK, or your own webhook – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed8 Jul · 18:26 UTC
The Gmail API Alternative for AI Agents – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed4 Jul · 19:35 UTC
Email inboxes for AI agents: the complete guide – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed4 Jul · 00:57 UTC
The Mailgun Routes alternative for developers – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed3 Jul · 23:57 UTC
Give your AI agent its own email inbox – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed3 Jul · 15:59 UTC
The Amazon SES alternative for developers – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed3 Jul · 15:28 UTC
The Honest SendGrid Inbound Parse Alternative – MailKite verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open
Indexed1 Jul · 23:00 UTC
Build software that heals itself in the agentic era verified via DEV.to articles
Source: DEV.to articles · Open

Frequently asked questions about MailKite

What is MailKite?: MailKite focuses on handling inbound and outbound email for products without operating mail servers or configuring deliverability infrastructure. It is catalogued under Email & inbox on PulseGate.
Who should use MailKite?: MailKite is a B2B product built for developers, product teams, and AI agent builders.
Is MailKite free?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does MailKite run on?: MailKite runs on the web, the command line, and API.
Is MailKite still active?: Unverified. MailKite has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who develops MailKite?: MailKite is developed by MailKite.
When did MailKite launch?: MailKite first shipped in 2024.
Is MailKite open source?: MailKite has a public GitHub repository.

At a glance

Pricing: Freemium · pricing page detected · free tier
Platforms: CLI · Web
Languages: English
Open source: Yes (GitHub)
Status: 🟡 Beta
Built for: developers, product teams, and AI agent builders
Model: B2B
Solves: Handling inbound and outbound email for products without operating mail servers or configuring deliverability infrastructure.

Registered as

GitHub: mailkite/community
GitHub: mailkite/mailkite-examples

Developer

GitHub

Open source

View on GitHub

Index record

Indexed: 1 Jul 2026
Lifecycle: Alive
Last seen: 17 Sep 2026

Identity audit (13)

Slug: build-software-that-heals-itself-in-the-agentic-era-mailkite-dev
Lifecycle last checked: 14 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 17 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 17 Sep 2026
Canonical URL: https://mailkite.dev/

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