Mailsend

Name: Mailsend
Author: CloudCorpRecords

by CloudCorpRecordsversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.CloudCorpRecords/mailsend

Install

Overview

Description from the maker (original English)

Send and manage email, domains, audiences, and API keys through the Resend API.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "mailsend": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/mailsend",
        "mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add mailsend -- npx -y @reneturcios/mailsend mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "mailsend": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/mailsend",
        "mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "mailsend": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/mailsend",
        "mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account CloudCorpRecords, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Chat & emaili

More stars than 0% of the other 1760 servers in this category
Published to the registry more recently than 82% of the other 1760 servers in this category
Basic checks equal to or better than 100% of the other 1760 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Mailsend safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 5 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js, Docker on your computer.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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MCP WhatsApp Cloud

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

mailsend

mailsend lets an agent run the sending side of a Resend account: send a message and look it back up, set up a sending domain and start its DNS verification, mint or retire API keys, and keep audiences and their contacts in order. Each operation is one call against the Resend REST API, and the API's JSON answer comes back as-is. It runs from the command line or as an MCP server for agents.

A Resend API key is required. Put it in the RESEND_API_KEY environment variable; the key is sent to the API as a Bearer token and never appears in output. When the variable is missing, every operation fails with an error that names it.

Install

npx @reneturcios/mailsend list-domains

Or run the container image:

docker run -i -e RESEND_API_KEY ghcr.io/cloudcorprecords/mailsend

The container defaults to the MCP server (see below). Pass CLI arguments to use it as a CLI instead.

CLI

export RESEND_API_KEY="your API key"

mailsend send --from "Acme " --to user@example.com \ --subject "Welcome" --text "Hello there" mailsend list-emails --limit 10 mailsend list-domains mailsend list-audiences

mailsend --version

Exit codes: 0 on success, 1 when an API call fails (including a missing RESEND_API_KEY), 2 for usage errors.

MCP server

One bin serves both faces. The mcp subcommand starts a stdio MCP server:

npx -y @reneturcios/mailsend mcp

MCP client configuration:

"mcpServers": { "mailsend": { "command": "npx", "args": ["-y", "@reneturcios/mailsend", "mcp"], "env": { "RESEND_API_KEY": "your API key" } } } }

Tools

Tool	Input	What it does
`send_email`	`from`, `to` (array), `subject` (required); `html`, `text`, `cc`, `bcc`, `reply_to` (optional)	Send an email.
`list_emails`	`limit` (integer, optional)	List sent emails.
`get_email`	`id` (required)	Get one sent email by ID.
`create_domain`	`name` (required), `region` (optional)	Create a sending domain.
`list_domains`	—	List sending domains.
`get_domain`	`id` (required)	Get one domain, including its DNS records.
`verify_domain`	`id` (required)	Start DNS verification for a domain.
`delete_domain`	`id` (required)	Delete a sending domain.
`create_api_key`	`name` (required), `permission`, `domain_id` (optional)	Create an API key.
`list_api_keys`	—	List API keys.
`delete_api_key`	`id` (required)	Delete an API key.
`create_audience`	`name` (required)	Create an audience.
`list_audiences`	—	List audiences.
`create_contact`	`audience_id`, `email` (required); `first_name`, `last_name`, `unsubscribed` (optional)	Add a contact to an audience.
`list_contacts`	`audience_id` (required), `limit` (optional)	List contacts in an audience.

This is a documented core subset of the Resend platform surface. The hosted Resend MCP also covers broadcasts, templates, webhooks, segments, topics, contact properties, batch sending, and received (inbound) email; those groups are not implemented here.

Development

npm install

npm run build # tsc -> dist/ npm test # node test runner over test/*.test.ts, no network (fake fetch fixtures) npm run dev # run the CLI from source via tsx

License

MIT — see LICENSE.

Mailsend

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

mailsend

Install

CLI

MCP server

Tools

Development

License