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mailbox.bot

by arbengineversion 1.0.4i★ –iRuns in the cloud
Registry namebot.mailbox/mailbox

Install

Overview

Description from the maker (original English)

Hosted mailbox.bot postal MCP. $15/mo mailboxes are live now.

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: Other
  • You need to fill in: Authorization

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.
  • You fill in yourself: Authorization

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

You need

Which app do you use?

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http mailbox https://mailbox.bot/api/mcp --header 'Authorization: your-value'

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": {
    "mailbox": {
      "url": "https://mailbox.bot/api/mcp",
      "headers": {
        "Authorization": "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": {
    "mailbox": {
      "type": "http",
      "url": "https://mailbox.bot/api/mcp",
      "headers": {
        "Authorization": "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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

  • Authorization secret required HTTP header
    Bearer token. Use an agent key (sk_agent_...) for autonomous agents, a sandbox key (sk_agent_test_...) for zero-charge testing on production endpoints, or a member key (sk_live_...) for personal use.…

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 mailbox.bot (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 Otheri

  • More stars than 0% of the other 32509 servers in this category
  • Published to the registry more recently than 72% of the other 32509 servers in this category
  • Basic checks equal to or better than 100% of the other 32509 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 mailbox.bot 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: Authorization

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 (1.0.4) reached the registry 15 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: Spec Driven Development, Remote Desktop Commander, Fomu MCP

Alternatives

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

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by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
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Remote Desktop Commander

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday
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Fomu MCP

by gabrielmahia

Kenya government form guides: checklists, draft letters, eCitizen, Huduma, timelines. Sample data.

Runs on your computerUpdated today
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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.

mailbox.bot MCP server

Official hosted Model Context Protocol server for [mailbox.bot](https://mailbox.bot). Production is remote Streamable HTTP at https://mailbox.bot/api/mcp.

Agents send letters, certified mail, postcards, and document packets. mailbox.bot prints, stamps, mails, photographs, tracks, and returns proof. Agent mailboxes are live now: a real street address plus PMB at the staffed, USPS-compliant Manhattan Beach, CA facility, $15/mo. The PMB number is assigned after USPS Form 1583 verification. The online notary fee is waived. Outbound mail uses prepaid credits and has no monthly base fee.

  • Website: https://mailbox.bot
  • Install: https://mailbox.bot/mcp-install
  • Pricing: https://mailbox.bot/pricing
  • Public tool catalog: https://mailbox.bot/api/mcp/tools-public
  • OpenAPI: https://mailbox.bot/openapi.json and https://mailbox.bot/openapi.yaml
  • Registry: bot.mailbox/mailbox (DNS-verified on mailbox.bot)

Connect

Sign in, no key. Clients that support MCP sign-in (claude.ai, ChatGPT, Cursor, Claude Code) can add https://mailbox.bot/api/mcp with no headers. The first tool call opens mailbox.bot's sign-in page, where you choose the agent and Sandbox or Live. On a live connection each letter waits for your approval in the dashboard. Disconnect any time on the API Keys page.

Plugin. This repository is also a Cursor and Claude Code plugin: .cursor-plugin/plugin.json and mcp.json for Cursor, .claude-plugin/ and .mcp.json for Claude Code (/plugin marketplace add arbengine/mailbox-mcp, then /plugin install mailbox-bot@mailbox-bot). Both connect by sign-in and bring the skills/mailbox-bot skill.

With a key. Add the hosted URL to the MCP client and pass a bearer key. Customers do not run a local process.

{

"mcpServers": { "mailbox-bot": { "url": "https://mailbox.bot/api/mcp", "headers": { "Authorization": "Bearer sk_agent_YOUR_KEY_HERE" } } } }

Create an account at mailbox.bot/signup. A live agent key (sk_agent_) sends real mail and spends prepaid credits. A sandbox key (sk_agent_test_) rehearses on the same endpoint with no charge and no physical mail. A member account key (sk_live_) cannot send mail.

Pricing

PlanPriceWhat you get
Outbound mail and forwarded inbound context$0/moPrint and mail with prepaid credits. Forward scans, photos, and PDFs from an address you already control.
Mailing address$15/moStreet address plus PMB at the Manhattan Beach, CA facility. Live now. The PMB number is assigned after USPS Form 1583 verification.

Published outbound examples start at $2.00 for a 1-page USPS First-Class letter. A dry run returns the exact price for that document, page count, service, and ZIP. That cost_breakdown is the price that applies.

Tools

55 hosted tools. Current tools are listed first. A deprecated tool is still served and names its replacement. Live schemas: public catalog.

ToolDescription
get_mailboxRead the account mailing address: street address plus PMB at the Manhattan Beach, CA facility. The rental is $15/mo and mailboxes are live now. The PMB number is assigned after USPS Form 1583 verification.
get_usageRead usage events and the prepaid credit balance. Agents can read the balance and cannot buy credits.
list_inbound_forwarding_addressesList the member's intake aliases on forward.mailbox.bot for scans, photos, and PDFs from an address the operator already controls.
list_inbound_mailList forwarded inbound mail with compact draft context for a reply.
get_inbound_mailRead one forwarded inbound item, OCR-backed facts, reply hints, and thread linkage.
list_postal_threadsList physical-mail threads that group inbound context and outbound sends.
get_postal_threadRead one physical-mail thread and its timeline.
get_mailbox_mdRead this agent's versioned MAILBOX.md instructions before an outbound send.
propose_mailbox_md_editPropose an edit to standing instructions. The owner accepts or rejects it.
send_facility_messageSend a message to the facility handling this mailbox.
list_facility_conversationsList conversations with the facility.
get_facility_messagesRead messages in a facility conversation.
update_webhookUpdate the legacy agent webhook callback URL and event subscriptions.
send_outbound_mailPrint and mail a document with prepaid credits. Call with dry_run=true and show the price before a live send.
list_outbound_mailList outbound mail jobs and their status.
get_outbound_mailRead one outbound job, including cost, status, and fulfillment photos.
cancel_outbound_mailCancel queued mail before printing and return eligible prepaid credits once.
create_test_outbound_mailCreate a sandbox outbound record with no charge and no physical mail.
advance_test_outbound_mailAdvance a sandbox outbound record through submitted, ready, mailed, and delivered.
quote_outbound_mailPrice a letter before you have the document: mail class, pages, colour and, for FedEx, the ZIP. Needs no account.
send_text_letterMail a letter written as plain text. Goes through send_outbound_mail with the same approval, caps and proof.
estimate_batch_mailPrice a batch of postcards, letters, flyers or pamphlets (10 to 10,000 pieces) before any file exists. Printing and USPS postage included.
create_batch_mailCreate a batch draft from a template link (a PDF, or a PNG/JPG postcard graphic) and recipients inline or by CSV link. Nothing is charged; the exact price comes back with links.proof.
get_batch_mail_proofA one-hour link to a proof PDF: the template as it prints, then the address label for one recipient at its real size, for the person who checks the batch.
confirm_batch_mailPay for a draft from prepaid credits once and queue it for printing. The key's approval and daily-piece policies apply; max_cost_cents refuses before any debit.
get_batch_mailRead a batch: status, recipient summary, pricing and refunds, links, first 50 pieces.
list_batch_mailList the caller's batches, newest first. Sandbox keys see sandbox batches only.
cancel_batch_mailCancel a batch before the facility starts; credits are refunded in full.
advance_test_batch_mailSandbox only: move a batch submitted → in_progress → completed and fire batch.completed, as the facility would.
search_inbound_itemsSearch physical mail at an assigned PMB, including saved OCR text. A sandbox key sees the account's Mojave sample letter.
get_inbound_itemRead one inbound item: pages, actions, and current scan and forward quotes.
get_inbound_pagesRead page text for one inbound item.
quote_inbound_forwardPrice every forwarding class for one item to a US ZIP.
request_inbound_actionPropose scan, forward, or discard. The owner approves. The proposal does not spend credits or move mail by itself.
get_inbound_activityRead the inbound timeline for items this key can see.
list_webhook_endpointsList the member's webhooks. Signing secrets are omitted.
create_webhook_endpointCreate a webhook. The signing secret is returned once.
update_webhook_endpointUpdate a webhook URL, events, keyword rules, or status.
test_webhook_endpointQueue a synthetic webhook.test delivery.
test_webhook_endpoint_with_sampleTest a webhook with the member's sample letter.
rotate_webhook_endpoint_secretRotate a webhook signing secret after the operator asks.
list_webhook_deliveriesRead recent webhook deliveries. Payloads omit page text.
replay_webhook_deliveryRetry a failed webhook delivery.
list_agent_inboxDeprecated. Use search_inbound_items.
get_agent_inbox_contextDeprecated. Use get_inbound_item.
get_agent_inbox_sourcesDeprecated. Use get_inbound_item.
list_agent_inbox_scansDeprecated. Use get_inbound_pages.
get_agent_inbox_scanDeprecated. Use get_inbound_pages.
get_agent_inbox_activityDeprecated. Use get_inbound_activity.
report_agent_inbox_outcomeDeprecated. No successor. Still served until the alias window closes.
get_agent_inbox_handlingDeprecated. Use get_inbound_item.
propose_agent_inbox_handlingDeprecated. Use request_inbound_action.
seed_agent_inbox_sandboxDeprecated. No successor. Still served until the alias window closes.
list_inbound_itemsDeprecated. Use search_inbound_items.
get_inbound_item_sourcesDeprecated. Use get_inbound_item.
get_mailbox

Read the account mailing address: street address plus PMB at the Manhattan Beach, CA facility. The rental is $15/mo and mailboxes are live now. The PMB number is assigned after USPS Form 1583 verification.

get_usage

Read usage events and the prepaid credit balance. Agents can read the balance and cannot buy credits.

list_inbound_forwarding_addresses

List the member's intake aliases on forward.mailbox.bot for scans, photos, and PDFs from an address the operator already controls.

list_inbound_mail

List forwarded inbound mail with compact draft context for a reply.

get_inbound_mail

Read one forwarded inbound item, OCR-backed facts, reply hints, and thread linkage.

list_postal_threads

List physical-mail threads that group inbound context and outbound sends.

get_postal_thread

Read one physical-mail thread and its timeline.

get_mailbox_md

Read this agent's versioned MAILBOX.md instructions before an outbound send.

propose_mailbox_md_edit

Propose an edit to standing instructions. The owner accepts or rejects it.

send_facility_message

Send a message to the facility handling this mailbox.

list_facility_conversations

List conversations with the facility.

get_facility_messages

Read messages in a facility conversation.

update_webhook

Update the legacy agent webhook callback URL and event subscriptions.

send_outbound_mail

Print and mail a document with prepaid credits. Call with dry_run=true and show the price before a live send.

list_outbound_mail

List outbound mail jobs and their status.

get_outbound_mail

Read one outbound job, including cost, status, and fulfillment photos.

cancel_outbound_mail

Cancel queued mail before printing and return eligible prepaid credits once.

create_test_outbound_mail

Create a sandbox outbound record with no charge and no physical mail.

advance_test_outbound_mail

Advance a sandbox outbound record through submitted, ready, mailed, and delivered.

quote_outbound_mail

Price a letter before you have the document: mail class, pages, colour and, for FedEx, the ZIP. Needs no account.

send_text_letter

Mail a letter written as plain text. Goes through send_outbound_mail with the same approval, caps and proof.

estimate_batch_mail

Price a batch of postcards, letters, flyers or pamphlets (10 to 10,000 pieces) before any file exists. Printing and USPS postage included.

create_batch_mail

Create a batch draft from a template link (a PDF, or a PNG/JPG postcard graphic) and recipients inline or by CSV link. Nothing is charged; the exact price comes back with links.proof.

get_batch_mail_proof

A one-hour link to a proof PDF: the template as it prints, then the address label for one recipient at its real size, for the person who checks the batch.

confirm_batch_mail

Pay for a draft from prepaid credits once and queue it for printing. The key's approval and daily-piece policies apply; `max_cost_

Only the beginning is shown; read the rest in the repo

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