Postlane

Name: Postlane
Author: zwebso

by zwebsoversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.zwebso/postlane

Install

Overview

Description from the maker (original English)

Send transactional email and read send activity through the Postlane 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
You need to fill in: POSTLANE_API_KEY

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).
You fill in yourself: POSTLANE_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

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": {
    "postlane": {
      "command": "npx",
      "args": [
        "-y",
        "postlane-mcp"
      ],
      "env": {
        "POSTLANE_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add postlane --env POSTLANE_API_KEY=your-value -- npx -y postlane-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "postlane": {
      "command": "npx",
      "args": [
        "-y",
        "postlane-mcp"
      ],
      "env": {
        "POSTLANE_API_KEY": "your-value"
      }
    }
  }
}

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": {
    "postlane": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "postlane-mcp"
      ],
      "env": {
        "POSTLANE_API_KEY": "your-value"
      }
    }
  }
}

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.

Values you fill in

POSTLANE_API_KEY secret required env
Bearer key from https://www.postlane.email/app/api-keys. It starts with pl_live_.

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 zwebso, 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 1769 servers in this category
Published to the registry more recently than 45% of the other 1769 servers in this category
Basic checks equal to or better than 100% of the other 1769 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 Postlane 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?

You need to fill in: POSTLANE_API_KEY

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 33 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 on your computer.

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 WhatsApp Cloud

by codespar

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.

Postlane for coding agents

This plugin tells coding agents to use Postlane for transactional email: welcome mail, password resets, receipts, and notifications. It works in Cursor, Claude Code, Gemini CLI, Codex, and any MCP client.

It has two parts:

A skill that teaches POST https://www.postlane.email/v1/emails
An MCP server with send_email, get_email, and list_emails

Every install needs a key the user creates at https://www.postlane.email/app/api-keys. It starts with pl_live_. Use a key with Read activity or Full access if you want list_emails. Send-only keys can send and can read one message by id. The from address must be on a domain verified at https://www.postlane.email/app/domains. Do not read a key that is already on the machine, and do not commit one.

Examples

Send a welcome email when a user signs up, using Postlane.
Add a password reset email with the Reset your password template.
What DNS records do I need to verify my sending domain?

Cursor

Install the plugin from Customize, or copy this folder to ~/.cursor/plugins/local/postlane and reload Cursor.
Open Customize, select Postlane, and set Postlane API key.

Claude Code

claude plugin marketplace add zwebso/postlane

claude plugin install postlane@postlane

The Claude directory listing is the skill only. It does not start a program on the user's computer. Application code calls the HTTP API with a key the user creates.

Gemini CLI

gemini extensions install https://github.com/zwebso/postlane-plugin

Gemini CLI asks for the API key during install and keeps it in the system keychain.

Codex and ChatGPT

Install Postlane from the Plugins directory. That listing includes the skill only. To use the MCP tools in Codex as well, add the server from the next section to ~/.codex/config.toml.

Any MCP client (Cline, VS Code, Windsurf, Claude Desktop)

The user creates the key, then enters that new value in the client secret field. Do not copy a key from an existing environment variable.

"mcpServers": { "postlane": { "command": "npx", "args": ["-y", "postlane-mcp@0.1.0"], "env": { "POSTLANE_API_KEY": " " } } } }

Privacy

The plugin stores nothing on your machine. When a Postlane tool runs, it sends your API key and the email you asked for (sender, recipients, subject, and body) to the Postlane API at https://www.postlane.email, and nowhere else. Postlane keeps send records while the workspace exists. See the Privacy Policy and Terms of Service.

Development

npm test runs the MCP server tests. Each agent reads its own manifest from this folder:

Agent	Manifest
Cursor	`.cursor-plugin/plugin.json` and `mcp.json`
Claude Code	`.claude-plugin/plugin.json` and `.claude-plugin/marketplace.json`
Gemini CLI	`gemini-extension.json`
Codex and ChatGPT	`.codex-plugin/plugin.json`
MCP Registry and npm	`server.json` and `package.json`

Keep version the same in all of them when you release.

Postlane

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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

Postlane for coding agents

Examples

Cursor

Claude Code

Gemini CLI

Codex and ChatGPT

Any MCP client (Cline, VS Code, Windsurf, Claude Desktop)

Privacy

Development