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PopNx MCPMCP servers for people who use AI · explained in plain words

Mailzzy

by softsagesversion 1.0.1i★ –iRuns in the cloud
Registry namecom.mailzzy/mcp

Install

Overview

Description from the maker (original English)

Email marketing: campaigns, audiences, contacts, segments, templates and reports.

PopNx MCP’s three pillars

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

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 in the cloud
  • Transport: Streamable HTTP
  • Category: Marketing & social media

Install

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

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://api.mailzzy.com/crm/mcp/

Run this in your terminal

claude mcp add --transport http mailzzy https://api.mailzzy.com/crm/mcp/

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "mailzzy": {
      "url": "https://api.mailzzy.com/crm/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": {
    "mailzzy": {
      "type": "http",
      "url": "https://api.mailzzy.com/crm/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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://api.mailzzy.com/crm/mcp/

Menu names can differ slightly by plan and over time.

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

We have not read this server’s tool list yet; we check endpoints in rotation.

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 against the domain mailzzy.com (the registry checks domain ownership)

  • … 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 checked yet

    Endpoint responds

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    Sign-in with OAuth

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Marketing & social mediai

  • More stars than 0% of the other 2966 servers in this category
  • Published to the registry more recently than 51% of the other 2966 servers in this category
  • Basic checks equal to or better than 100% of the other 2966 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 Mailzzy 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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 29 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

Alternatives

Servers in the same category from other makers, sorted by stars.

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

An MCP server retrieving transcripts of YouTube videos

Runs on your computer★ 495MITUpdated 9 days ago
Install

GA4 MCP server for AI agents: schema discovery, server-side aggregation, analysis-ready defaults.

Runs on your computer★ 244MITUpdated 9 days ago
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.

Mailzzy MCP Server

Connect Claude, ChatGPT, Cursor, VS Code and other MCP clients to your Mailzzy account. Ask your assistant to build an audience, draft a campaign, check it against your sending limits, send a test, and schedule it, then pull the performance report when it goes out.

This is a hosted MCP server. There is nothing to install or run: point your client at the URL below and sign in with your Mailzzy account.

https://api.mailzzy.com/crm/mcp/
Documentationhttps://mailzzy.com/docs/#mcp-overview
TransportStreamable HTTP
AuthenticationOAuth 2.1 with PKCE and dynamic client registration (sign in with Mailzzy)
Tools49 (full list)
Account neededYes, a Mailzzy account (sign up)
Registry namecom.mailzzy/mcp

This repository holds documentation and the registry manifest only. The server itself is

operated by SoftSages and is not open source.

What you can do

  • Campaigns: draft, update, send a test to yourself, send now or schedule, and cancel a scheduled campaign.
  • Audiences: pick groups, segments or tags, see the de-duplicated recipient count, and check it against your daily and monthly sending limits before you send.
  • Contacts: create, update, tag, group, archive, bulk-import from CSV, and export a segment or group as CSV.
  • Segments: build saved filters, preview how many contacts match, then save them.
  • Templates and automations: create and edit email templates and automation workflows.
  • Transactional email: send a one-to-one email and read delivery logs.
  • Reports: campaign metrics, performance over a date range, and per-domain deliverability.
Example prompts
  • "Show me my last five campaigns and their open rates."
  • "Create a segment of contacts tagged webinar-sept who opened anything in the last 30 days, and tell me how many that is."
  • "Draft a campaign announcing our October sale to that segment, send me a test, and schedule it for Tuesday 10am my time."
  • "Which recipient domains are bouncing most this month?"

Listings

Connect your client

Claude (claude.ai, desktop and mobile)

Settings > Connectors > Add custom connector, paste https://api.mailzzy.com/crm/mcp/, then Connect and sign in.

Claude Code
claude mcp add --transport http mailzzy https://api.mailzzy.com/crm/mcp/

Then run /mcp inside Claude Code and choose Authenticate.

ChatGPT

Settings > Apps and Connectors > Advanced > turn on Developer mode, then Create a connector with the URL https://api.mailzzy.com/crm/mcp/ and authentication OAuth.

Cursor

~/.cursor/mcp.json:

{

"mcpServers": { "mailzzy": { "url": "https://api.mailzzy.com/crm/mcp/" } } }

VS Code (GitHub Copilot agent mode)

.vscode/mcp.json:

{

"servers": { "mailzzy": { "type": "http", "url": "https://api.mailzzy.com/crm/mcp/" } } }

Cline

In the Cline panel open MCP Servers > Configure > Remote Servers, then add:

  • Server Name: mailzzy
  • Server URL: https://api.mailzzy.com/crm/mcp/
  • Transport Type: Streamable HTTP

Or edit cline_mcp_settings.json directly (Configure > Configure MCP Servers):

{

"mcpServers": { "mailzzy": { "type": "streamableHttp", "url": "https://api.mailzzy.com/crm/mcp/", "disabled": false, "autoApprove": [] } } }

Sign in with your Mailzzy account when Cline opens the browser. If the server shows an authentication error, remove it and add it again to restart the sign-in. Setup notes written for Cline itself are in llms-install.md.

Any other MCP client

Use the URL with Streamable HTTP transport. The server answers unauthenticated requests with 401 and a WWW-Authenticate header pointing at its protected resource metadata, so any client that follows the MCP authorization spec can discover the authorization server and register itself.

Authentication and permissions

  • You sign in on Mailzzy's own login page. Your password is never shared with the AI client.
  • The client receives a short-lived access token scoped to your account. Every tool call acts as you and can only see your own account's data.
  • Scopes advertised: mcp:read, mcp:write, mcp:send.
  • Every tool carries MCP annotations. Read tools are marked read-only. Sending a campaign or transactional email, deleting a contact, and cancelling a campaign are marked destructive, so well-behaved clients ask you to confirm before running them.
  • To disconnect, remove the connector in your client.

Privacy and security

  • Privacy policy: https://www.mailzzy.com/privacy-policy/
  • Terms of use: https://www.mailzzy.com/terms-of-use/
  • Report a vulnerability: see SECURITY.md

Support

  • Email: support@mailzzy.com
  • Contact page: https://www.mailzzy.com/contact-us/
  • Documentation issues with this repository: open a GitHub issue.

Mailzzy is a product of SoftSages.

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