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Sendar MCP

by Thutosversion 1.0.0i★ –iRuns in the cloud
Registry nameapp.sendar/mcp

Install

Overview

Description from the maker (original English)

Sendar application email: inspect setup, preview, send and check delivery.

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: Chat & email

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://sendar.app/api/mcp

Run this in your terminal

claude mcp add --transport http sendar https://sendar.app/api/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sendar": {
      "url": "https://sendar.app/api/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": {
    "sendar": {
      "type": "http",
      "url": "https://sendar.app/api/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://sendar.app/api/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 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain sendar.app (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 Chat & emaili

  • More stars than 0% of the other 1772 servers in this category
  • Published to the registry more recently than 42% of the other 1772 servers in this category
  • Basic checks equal to or better than 100% of the other 1772 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 Sendar MCP 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 (1.0.0) reached the registry 37 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: Vexa, emailmd, MCP WhatsApp Cloud

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

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago
Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago
Install

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months 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.

Sendar — Email for AI Agents

Portable skills and plugin manifests for integrating application email with Sendar.

Install skills

npx skills add Thutos/sendar-agent-skills

Choose the agents and skills in the installer. Skills can write integration code without an account connection. Review files before installing third-party skills.

Replit

Import https://github.com/Thutos/sendar-agent-skills through + → Use a skill → GitHub import, preview and select the three skills. Or run in the project shell:

npx skills add Thutos/sendar-agent-skills --agent replit

Files live in .agents/skills. Keep SENDAR_API_KEY in Replit Secrets and server-side code. Installing skills is separate from connecting an account or authorizing a send. Replit setup.

Windsurf / Devin Desktop

npx skills add Thutos/sendar-agent-skills --agent windsurf

The installer uses .agents/skills with links under .windsurf/skills. Current Devin Desktop also discovers .agents/skills; .devin/skills is its preferred manual-install location. In Cascade, invoke @sendar-integrate, @sendar-delivery, or @sendar-migrate. Windsurf setup.

Both CLI installation layouts were tested in an isolated project on 30 September 2026, including supporting reference files. These are installation checks, not claims of end-to-end execution in Replit/Cascade or partner-directory approval.

Connect MCP

Remote endpoint: https://sendar.app/api/mcp (Streamable HTTP).

  • Claude Code: claude mcp add --transport http sendar https://sendar.app/api/mcp, then connect from /mcp.
  • Codex: codex mcp add sendar --url https://sendar.app/api/mcp, then codex mcp login sendar.
  • Cursor: merge configs/cursor.json into your MCP configuration; use the connection/authentication control.
  • VS Code/Copilot: merge configs/vscode.json into .vscode/mcp.json; start the server and follow authentication.
  • ChatGPT and Claude web: add the endpoint as a custom connector where your account supports it. Curated marketplace listing is separate and may require review.

OAuth uses S256 PKCE and dynamic public-client registration. During consent, read-only is the default; sending is optional and restricted to a verified domain, a daily recipient allowance and an optional recipient list. Revoke from https://sendar.app/agent-connections. Client names in consent are self-declared, not platform identity verification.

Existing API keys also work as an Authorization Bearer header, with their existing permissions. Keep them in a private environment/secret store, not checked-in configuration. Clients without OAuth support can use this path if they support secret headers.

Plugin packages

This repository contains Codex, Claude Code and Cursor manifests pointing to the same skills and MCP server. For Claude Code, add this repository as a plugin marketplace, then install sendar@sendar. Marketplace submissions are tracked separately; the existence of a manifest is not an endorsement or listing.

Tools

get_setup_status, preview_email, list_domains, list_templates, list_emails, get_email_status, and (when permitted) send_email.

Live sending needs task authorisation, confirmed: true, and a stable idempotency_key. Preview does not send. Do not retry an uncertain outcome with a new key. “Sent” means provider acceptance, not inbox delivery.

App builders

For Lovable, Replit, Bolt and v0, use https://sendar.app/ai and the server-side starters at https://github.com/Thutos/sendar-email-starters. Ask the builder to integrate the existing application event and store SENDAR_API_KEY in its private server environment. These recipes do not imply a native marketplace listing.

Compatibility and support

See https://sendar.app/ai for instructions and releases. Protocol/authentication tests are automated against a disposable database. Individual client sign-in and curated marketplace approval must be verified separately. Report integration issues through GitHub Issues without credentials, private recipients or message bodies.

Privacy: https://sendar.app/privacy · Terms: https://sendar.app/terms

Public agent reference

The public contract covers core email operations; it does not expose dashboard/admin APIs. REST API keys retain their existing permissions. MCP OAuth connections are read-only by default; optional sending requires a bounded grant. A successful mock or preview is not a live-delivery test. Documentation files assist integrations, not guaranteed search rankings or marketplace approval.

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