Postlane

Name: Postlane
Author: zwebso

by zwebsoversion 0.1.0i★ 0iRuns on your computer

Registry nameio.github.zwebso/postlane

How to install

What it does

Send transactional email and read send activity through the Postlane API.

Connects Runs on your computer
Account or key Needs POSTLANE_API_KEY
Category Chat & email

Install

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

Passed 2/3 checks · Runs on your computer · ✓ Commands checked Nov 14, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Postlane key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Postlane site ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

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

Paste the key only into the app’s field, never into a chat or to anyone

Done

Quit Claude and open it again
Done
Try it
Use Postlane and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Postlane or shows a Postlane tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Postlane yet

Postlane runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Postlane

Steps for Claude →You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Chat & email that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

HyperFrames by HeyGen✓ ChatGPT
Inbox Zero✓ ChatGPT
draw.io✓ ChatGPT

Works with Claude Code, with some setup first

You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Postlane key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Postlane site ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
4
Paste this command and press Enter
```
claude mcp add --scope user postlane --env POSTLANE_API_KEY=your-value -- npx -y postlane-mcp
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Postlane listed as connected
Done
Try it
Use Postlane and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Postlane or shows a Postlane tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Postlane key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Postlane site ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Postlane settings, POSTLANE_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Postlane and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Postlane or shows a Postlane tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Postlane key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Postlane key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Postlane site ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Postlane settings, POSTLANE_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Postlane and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Postlane or shows a Postlane tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Postlane💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

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

Claude Desktop (claude_desktop_config.json)

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

Cursor (~/.cursor/mcp.json)

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

VS Code (mcp.json)

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

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_.

Descriptions are as written by the maker.

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

At a glance

GitHub stars i: 0
Downloads per weeki: 90/wk
Licence i: No licence stated
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.1.0
Categoryi: Chat & email
Published to registryi: Oct 5, 2026
Code last changedi: Nov 6, 2026
Maker: zwebso
Packages: npm: postlane-mcp
Repo: zwebso/postlane
Website: www.postlane.email
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 14, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account zwebso, which owns the repo
✓ Pass
Still maintained
Code last changed 8 days ago
✕ Fail
Has a licence
No licence file found in the repo
– 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Chat & emaili

More stars than 0% of the other 2042 servers in this category
Published to the registry more recently than 38% of the other 2042 servers in this category
Basic checks equal to or better than 51% of the other 2042 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 2 of 3 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 8 days ago, and the latest version (0.1.0) reached the registry 40 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: HyperFrames by HeyGen, Inbox Zero, draw.io

Others in the same category

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

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

HyperFrames by HeyGen

Official HyperFrames by HeyGen: the best AI video editor in chat. Captions, motion graphics, MP4.

by heygen-comWidely used★ 83.9KUpdated today

Runs in the cloud

How to connect

Inbox Zero

Search Gmail and Outlook, save drafts, manage email rules, and view email stats.

by elie222Widely used★ 13KUpdated 44 days ago

Runs in the cloud

How to connect

draw.io

Create draw.io diagrams in chat from Mermaid or XML, shown live and interactive. 10,000+ shapes.

by jgraphWidely used★ 5.8KUpdated 4 days ago

Runs in the cloud✓ service owner · draw.io

How to connect

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

What it does

Install

Install Node.js

Sign up and create a Postlane key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Sign up and create a Postlane key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Sign up and create a Postlane key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Sign up and create a Postlane key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Chat & emaili

Common questions

Others in the same category

HyperFrames by HeyGen

Inbox Zero

draw.io

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