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

Mailshake MCP by usefulapi

by m190version 1.2.3i★ –iRuns in the cloud
Registry nameio.usefulapi/mailshake

Install

Overview

Description from the maker (original English)

Read campaigns, replies and leads; pause or resume campaigns; close or reopen leads in Mailshake.

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.

Install

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

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 20 things (tools) mailshake_get_account, mailshake_list_team_members, mailshake_list_senders, mailshake_list_campaigns …
  • 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://mailshake.usefulapi.io/mcp

Run this in your terminal

claude mcp add --transport http mailshake https://mailshake.usefulapi.io/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "mailshake": {
      "url": "https://mailshake.usefulapi.io/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": {
    "mailshake": {
      "type": "http",
      "url": "https://mailshake.usefulapi.io/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://mailshake.usefulapi.io/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

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • mailshake_get_account

    Show the signed-in Mailshake user and team. Also the cheapest call to check the API key. Mailshake: POST /me.

  • mailshake_list_team_members

    List the users on the team, for assigning leads. Mailshake: POST /team/list-members.

  • mailshake_list_senders

    List the sender accounts (the mailboxes that send campaign emails). Mailshake: POST /senders/list.

  • mailshake_list_campaigns

    List the team's campaigns with their IDs and status. Start here to find a campaignID. Costs 10 quota units per call. Mailshake: POST /campaigns/list.

  • mailshake_get_campaign

    Get one campaign and its message sequence. Mailshake: POST /campaigns/get.

  • mailshake_list_recipients

    List the recipients of one campaign. Filter by state (for example opened, clicked, replied, wasSent, bounced, paused, hasProblems); set negateAction to exclude that state. Costs 10 quota units per call. Mailshake: POST /recipients/list.

  • mailshake_list_leads

    List the team's leads: recipients who may be interested. Filter by campaign, status (for example open) or the teammate the lead is assigned to. Costs 1 quota unit per call. Mailshake: POST /leads/list.

  • mailshake_list_sent_messages

    List the most recent emails sent, with the recipient and the message text as plain text. Costs 1 quota unit per call. Mailshake: POST /activity/sent.

  • mailshake_list_replies

    List the most recent replies, with the reply text as plain text. Use replyType reply for real answers; bounce, out-of-office, unsubscribe and delay-notification are the other kinds. Costs 10 quota units per call. Mailshake: POST /activity/replies.

  • mailshake_list_opens

    List the most recent email opens. Costs 2 quota units per call. Mailshake: POST /activity/opens.

  • mailshake_list_clicks

    List the most recent clicks on tracked links. Costs 3 quota units per call. Mailshake: POST /activity/clicks.

  • mailshake_list_created_leads

    List the most recently created leads (from Lead Catcher rules or manual conversions). Costs 5 quota units per call. Mailshake: POST /activity/created-leads.

  • mailshake_list_lead_status_changes

    List the most recently updated leads (opened, won, lost or ignored). Costs 5 quota units per call. Mailshake: POST /activity/lead-status-changes.

  • mailshake_pause_campaign

    Stop all sending for a campaign now. Emails already in a batch are not stopped. Undo with mailshake_unpause_campaign. Mailshake: POST /campaigns/pause.

  • mailshake_unpause_campaign

    Resume sending for a paused campaign. The sending calendar reschedules its pending emails. Mailshake: POST /campaigns/unpause.

  • mailshake_pause_recipient

    Stop all sending to one recipient in a campaign. Undo with mailshake_unpause_recipient. Mailshake: POST /recipients/pause.

  • mailshake_unpause_recipient

    Resume sending to one paused recipient in a campaign. Mailshake: POST /recipients/unpause.

  • mailshake_close_lead

    Mark a lead as won (status closed, the default) or as lost (status lost). Mailshake: POST /leads/close.

  • mailshake_ignore_lead

    Mark a lead as not worth pursuing (ignored). Undo with mailshake_reopen_lead. Mailshake: POST /leads/ignore.

  • mailshake_reopen_lead

    Make a closed or ignored lead open again for review. Mailshake: POST /leads/reopen.

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 usefulapi.io (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

  • ✓ Pass

    Endpoint responds

    Responded in 14 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 20 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 32357 servers in this category
  • Published to the registry more recently than 98% of the other 32357 servers in this category
  • Basic checks equal to or better than 100% of the other 32357 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 Mailshake MCP by usefulapi safe?

It passed 3 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?

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 (1.2.3) reached the registry today.

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, Parano1d node

Alternatives

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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.

Mailshake MCP by usefulapi

Use your Mailshake account from Claude, Cursor, or any MCP client. Read campaigns, replies, leads and activity, pause or resume campaigns and recipients, and close, ignore or reopen leads. Hosted, no local install: connect with your own credentials.

Live endpoint: https://mailshake.usefulapi.io/mcp · Homepage: https://usefulapi.io

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://mailshake.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http mailshake https://mailshake.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
{

"mcpServers": { "mailshake": { "url": "https://mailshake.usefulapi.io/mcp" } } }

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Mailshake credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/mailshake/

On first connect you provide your Mailshake API key, created in Mailshake under Extensions → API. The server validates it and stores it per user. No keys go in config files.

Tools

ToolTypeWhat it does
mailshake_get_accountreadGet account
mailshake_list_team_membersreadList team members
mailshake_list_sendersreadList senders
mailshake_list_campaignsreadList campaigns
mailshake_get_campaignreadGet campaign
mailshake_list_recipientsreadList recipients
mailshake_list_leadsreadList leads
mailshake_list_sent_messagesreadList sent messages
mailshake_list_repliesreadList replies
mailshake_list_opensreadList opens
mailshake_list_clicksreadList link clicks
mailshake_list_created_leadsreadList created leads
mailshake_list_lead_status_changesreadList lead status changes
mailshake_pause_campaignwritePause campaign
mailshake_unpause_campaignwriteUnpause campaign
mailshake_pause_recipientwritePause recipient
mailshake_unpause_recipientwriteUnpause recipient
mailshake_close_leadwriteClose lead
mailshake_ignore_leadwriteIgnore lead
mailshake_reopen_leadwriteReopen lead
mailshake_usage_statusmetaUsage status (free-tier meter)
mailshake_request_featuremetaRequest a missing feature
mailshake_upgrademetaUpgrade to Pro or Pro+
mailshake_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per user)$9/mo or $90/yr (2 months free)Unlimited*

\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.

Pro covers this server only. Subscribe with mailshake_upgrade (it returns a Stripe Checkout link). Cancel any time with mailshake_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running mailshake_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

MIT — see LICENSE. Documentation only; the server is hosted.

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