SendLit

npx add-mcp 'https://api.sendlit.app/mcp'

One hosted app for broadcasts, sequences and transactional email, sent through your own Amazon SES, Postmark, Resend or SMTP account.

Free plan · No lock-in: open source

SendLit · Broadcast Draft

October product update

To: All subscribers 100k

Send broadcast

Your provider you pick one

Amazon SES

SMTP

Postmark

Resend

SendGrid

Mailgun

Inbox delivered

S October product update NEW

S October product update NEW

S October product update NEW

Works with the provider and tools you already use

• Send through
• Amazon SES
• Postmark
• Resend
• SendGrid
• Mailgun
• SMTP
• Build with
• TypeScript
• React
• Claude
• ChatGPT
• Cursor

Product names and logos belong to their owners. Listed to show compatibility, not endorsement.

MCP server · Connect your AI agent

Run your email from Claude, ChatGPT or Cursor

Add SendLit's MCP server to your assistant, sign in, and just ask. Your emails still go out through your own provider.

• See your sequences and broadcasts, with their status and emails.
• Check stats: emails sent, opens and clicks.
• Review provider settings. Passwords and keys are never read back.
• Draft campaigns and send yourself a test before anything goes out. MCP server URL

Copy MCP URL

Works in Claude ChatGPT Cursor and other MCP clients

Start free MCP setup guide →

Sign in with OAuth, pick your team and approve what the assistant may read or change. Included on every plan, including Free. MCP covers the work you do day to day; billing, organization setup and team provisioning stay in the dashboard and REST API.

Your AI assistant SendLit connected

show my email sequences

used SendLit · list_sequences

Your email sequences

Total 3

Active 2

Drafts 1

Welcome series Active 7 emails

End of trial check-in Active 1 email

+ 1 draft sequence

stats for my welcome series

used SendLit · get_sequence_stats

Welcome series

Emails sent 1,284

Open rate 46.2%

Click rate 8.7%

Example conversation · sample data, not a real account

Pay for the emails you send, not the size of your list

100,000 subscribers emailed weekly is about 400,000 emails, roughly $40 a month on Amazon SES. List-priced newsletter tools charge hundreds for the same sends.

100k subscribers, weekly

SendLit + Amazon SES

~$40/mo

List-priced tools (Beehiiv)

$469/mo

Everything you need to send, nothing you don't

Broadcasts

Write in a visual editor and send newsletters and campaigns to your whole list or a segment.

Sequences

Welcome series, onboarding and drips that run on their own.

Transactional email

Receipts, resets and alerts from one REST API, with the same templates and tracking.

Your own sender

Bring Amazon SES or any SMTP provider. Your reputation and your rates stay yours.

Built for AI agents

An MCP server lets Claude, Cursor and other assistants manage contacts, templates and sends.

Open source

The core is open source and self-hostable, so you're never locked in.

Your own SES, without the deliverability homework

Moving to Amazon SES usually means wiring up bounces, complaints and suppression yourself. SendLit does it for you.

Bounces and complaints, handled

Connect your SES notifications and SendLit records hard bounces and spam complaints automatically.

Automatic suppression

Bounced and complaining addresses are suppressed, so you never mail them again and your reputation stays clean.

One-click unsubscribe

Every marketing email carries the List-Unsubscribe headers Gmail and Yahoo require (RFC 8058).

Embed email in your platform

Course, community and creator platforms can give every customer their own email marketing. Provision teams with one API call, set per-team sending quotas, and drop SendLit's React editor and blocks into your app.

Add newsletters to your product in a few lines

The official TypeScript SDK, a REST API and an MCP server, all typed from the same contract the API validates against.

Read the SDK docs · View on GitHub

$npm install sendlit

import { SendLit } from "sendlit";

const sendlit = new SendLit({ apiKey: process.env.SENDLIT_API_KEY });

await sendlit.contacts.create({
  email: "ada@example.com",
  name: "Ada Lovelace",
});
// New contacts start your welcome sequence automatically.

How SendLit compares

Feature	SendLit	beehiiv	Kit	MailCheap
Open source and self-hostable	✓ Yes	✕ No	✕ No	✓ Yes
Send through your own provider	SES, SMTP, Postmark, Resend, SendGrid, Mailgun	✕ No	✕ No	SES or PostShiba
Multi-step sequences	✓ Yes	✓ Yes	✓ Yes	Welcome email only
Transactional email API	✓ Yes	✕ No	✕ No	✕ No
Teams for your customers (multi-tenant API)	✓ Yes	✕ No	✕ No	✕ No

Based on public product pages, October 2026.