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Email marketing for every project you run.

Newsletters, campaigns, automatic emails and receipts for every project you run, in one account. Contacts are unlimited on every plan, and plans are sized by the emails you send each month.

Get startedSee it in action
By Muhammed Sevimli

Works with

Connect in a minute
  • Claude
  • ChatGPT
  • Cursor

Your Sendicorn account

Campaign

saved 2 min ago

Draft
To
Everyone tagged regulars1,204 people
From
Elif from Sunday Brew
Subject
Three beans worth the price this month

Hi Deniz,
I tasted eleven coffees in September. Three were worth what they cost.

  • Verified sendersend.sundaybrew.co
  • Unsubscribe link1 click
  • People who left are skipped38

0 / 1,204 deliveredChecked and ready to go.

One panel for newsletters, automations and app emails.

Write and schedule newsletters, grow your list, build automatic emails, send receipts from your app and see what worked. All of it by hand in the panel, with your AI joining in when you want.
The campaign editor with its live preview

An editor with a live preview and personal fields like first names. Send yourself a test, schedule it, or send a first batch to the readers likeliest to open and the others later.

Automatic emails that read like a sentence.

Welcome series, onboarding, reminders and win-backs. Build one step by step in the panel, or describe it to your AI. Either way the series stops on its own once it has done its job.

Welcome to Sunday Brew

Active

Last 30 days

  1. When someone joins Sunday Brew

    1,862 started

  2. Send Start here · right away

    1,862 sent

  3. Wait 2 days

  4. Stop if they bought a bean box

    212 stopped here

  5. Send The three beans I keep

    1,603 sent

  6. Wait 4 days

  7. Send A box for your desk

    1,431 sent
Starts
When someone joins your list, buys something, or does anything else your site tells us about.
Waits
Minutes, hours or days between emails.
Stops
The moment someone buys, or does whatever the emails were for.
Results
How many people started, finished or left the series, and how many emails it sent.

Every project, one account.

Your newsletter, your app and last month's side project sit side by side, each with its own sender, contacts and reputation.
Sent
24,310
Delivered
99.2%
Opened
58.4%
Bounced
0.31%
Spam reports
0.01%
send.sundaybrew.coContacts 2,418Own reputation

ProjectSpam reports

  • Sunday BrewSending
    0.01% spam reports
  • DriftwoodSending
    0.00% spam reports
  • Old giveaway listPaused
    0.42% spam reports

A bad list pauses only its own project

If spam reports pile up in one project, only that one pauses.

Send from your own domain

Add the records we show you once. We check them for you.

Hand your AI as much as you like.

Ask Claude, ChatGPT or Cursor to write this week's issue, set up a welcome series or pull last month's numbers. It writes drafts until you switch on sending, and every send shows up in the log.

Claude

Drafts only

Write this week's issue from my notes and send it to everyone tagged regulars.
Read last month's numbers
Wrote the draft
Made a preview

The draft is ready: “Three beans worth the price this month”, going to 1,204 people.

It's waiting for you in Sendicorn. Send it from there when you're happy with it.

Review draft

What your AI may do

3 of 6 on

A new connection starts here: it writes drafts, and you send them. Tick what it may do alone when you connect it.

Connect your AI in a minute.

No files, no code. Claude, ChatGPT and Cursor each keep connectors in their settings: paste one link, sign in, and it's connected.

Your connection link

https://app.sendicorn.com/api/mcp

Works in the Claude app and on claude.ai.

In Claude Code it's one line: claude mcp add --transport http sendicorn https://app.sendicorn.com/api/mcp

Claude

· Settings

Priced by the emails you send.

  • Unlimited contacts

    Every plan holds as many contacts as you have. Only the emails you send count.

  • Every project and teammate

    Unlimited projects and seats from the first plan, so a new brand never means a new account.

  • More emails when you need them

    Add 10,000 emails for $4 at any time. No overage bills.

Find your plan

drag to your monthly emails

20,000

20k a month

$9 / month

Up to 20,000 emails a month. Need more? Add 10,000 emails for $4 whenever you want.

  • Unlimited contacts
  • Unlimited projects and seats
  • AI connections, automations and the API
Get started

Prices in US dollars. Sales tax or VAT is added at checkout where it applies.

For developers: the Resend SDK works as it is.

Point the official Resend SDK at Sendicorn with one environment variable and swap the key. Your send calls stay as they are, and app emails land in the same account as your newsletters.
/emails
Send, batch, schedule and cancel, with idempotency keys and Resend's error shapes.
/domains
Add a sending domain and read its DNS records through the same calls.
webhooks
Signed with the same headers, so the verification code you already have keeps working.

.env · two lines

RESEND_API_KEY=re_3kd8Sx2LqWb7...RESEND_API_KEY=sc_live_7Hq2vN9dKe4...RESEND_BASE_URL=https://app.sendicorn.com/api/resend

send.js · unchanged

import { Resend } from "resend";const resend = new Resend(process.env.RESEND_API_KEY);await resend.emails.send({  from: "Sunday Brew <[email protected]>",  to: "[email protected]",  subject: "Your bean box ships Friday",  html: "<p>Order #1048 is packed.</p>",});

Questions, answered.

Something else on your mind? Write to [email protected].
Do I need to know how to code?
No. You write and schedule newsletters, import contacts, build automatic emails and read reports in the panel. Connecting your AI is optional, and the API is for developers.
Can I move my list from another email tool?
Yes. Export your contacts as a CSV file and upload it. If the file says who unsubscribed or bounced, those people stay out.
Which AI apps work with it, and can they send?
Claude, ChatGPT, Cursor and any AI app that can add a connector from a link. A new connection writes drafts and you send them. Sending is a separate switch you turn on.
Will my emails reach the inbox?
Each project has its own reputation, so one bad list can't hurt the others. People who bounce or report spam are never emailed again, and sending pauses itself if problems jump.
Do I need an Amazon account?
No. We handle sending, domain setup and deliverability for you.

Why I built it.

Every project I run needs email: a newsletter, a welcome series, receipts. My email tool charged me for every contact and wanted a new account for each brand.

So I built the one I wanted: all my projects in one account, contacts that don't cost extra, and Claude writing a first draft when I'm short on time. My own projects move onto it first.

Muhammed Sevimli@_msevimli · building it in public

Start sending today.

Bring every project and every list. Contacts are unlimited on every plan, and plans are sized by the emails you send each month.

Get started

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