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

SendPost MCP by usefulapi

by m190version 1.6.3i★ –iRuns in the cloud
Registry nameio.usefulapi/sendpost

Install

Overview

Description from the maker (original English)

Inspect SendPost delivery statistics, sending IPs, message metadata, domains, and suppressions.

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 15 things (tools) sendpost_list_subaccounts, sendpost_get_subaccount, sendpost_list_ips, sendpost_get_ip …
  • 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://sendpost.usefulapi.io/mcp

Run this in your terminal

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

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sendpost": {
      "url": "https://sendpost.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": {
    "sendpost": {
      "type": "http",
      "url": "https://sendpost.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://sendpost.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.

  • sendpost_list_subaccounts

    READ (account key): List sub-accounts and safe account metadata. API keys and SMTP credentials are never returned.

  • sendpost_get_subaccount

    READ (account key): Get a sub-account's safe metadata, labels and blocked state. Credentials are excluded.

  • sendpost_list_ips

    READ (account key): List sending IPs, warmup and state metadata. Does not allocate or change IPs.

  • sendpost_get_ip

    READ (account key): Inspect an existing sending IP's public address, reverse DNS and warmup state.

  • sendpost_list_ip_pools

    READ (account key): List IP pool names, routing strategy, overflow settings and safe public IP metadata.

  • sendpost_get_ip_pool

    READ (account key): Inspect one IP pool's routing strategy, overflow settings and public IP metadata. Provider credentials and routing internals are excluded.

  • sendpost_list_account_stats

    READ (account key): Daily delivery, bounce, open, click, unsubscribe and spam counts across sub-accounts. Use up to 366 days per call.

  • sendpost_get_account_stats

    READ (account key): Aggregate delivery and engagement counts across sub-accounts over a date range, up to 366 days.

  • sendpost_get_account_group_stats

    READ (account key): Aggregate delivery and engagement counts for an existing group/tag across sub-accounts, up to 366 days.

  • sendpost_list_subaccount_stats

    READ (account key): Read a sub-account's delivery and engagement statistic records for a date range, up to 366 days.

  • sendpost_get_subaccount_stats

    READ (account key): Aggregate delivery and engagement counts for one sub-account over a date range, up to 366 days.

  • sendpost_get_message_metadata

    READ (account key): Inspect a submitted message's ID, sender, recipient, subject, groups and routing metadata. Excludes bodies, attachments, custom headers and recipient custom fields. Large messages may exceed the 1 MiB read limit.

  • sendpost_list_domains

    READ (sub-account key): Audit sending domains, DNS record configuration and verification failures. Does not create or verify domains.

  • sendpost_get_domain

    READ (sub-account key): Inspect a sending domain's DNS records and verification status.

  • sendpost_list_suppressions

    READ (sub-account key): Inspect suppressions and documented reasons within a date range, with pagination. Does not add or remove suppressions.

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 42 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 15 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 32380 servers in this category
  • Published to the registry more recently than 97% of the other 32380 servers in this category
  • Basic checks equal to or better than 100% of the other 32380 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 SendPost 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 (1.6.3) reached the registry yesterday.

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, Dechonet MCP

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

Spec Driven Development

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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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Dechonet MCP

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30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.

Computer or cloudUpdated 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.

SendPost MCP by usefulapi

https://sendpost.usefulapi.io/mcp

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://sendpost.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http sendpost https://sendpost.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": { "sendpost": { "url": "https://sendpost.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 SendPost credentials.

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

Connect with a SendPost account or sub-account API key for the matching read-only tools. SendPost access is purchased separately.

Tools

ToolTypeWhat it does
sendpost_list_subaccountsreadList SendPost sub-accounts
sendpost_get_subaccountreadGet SendPost sub-account
sendpost_list_ipsreadList SendPost sending IPs
sendpost_get_ipreadGet SendPost sending IP
sendpost_list_ip_poolsreadList SendPost IP pools
sendpost_get_ip_poolreadGet SendPost IP pool
sendpost_list_account_statsreadList SendPost account daily statistics
sendpost_get_account_statsreadGet SendPost account aggregate statistics
sendpost_get_account_group_statsreadGet SendPost account group statistics
sendpost_list_subaccount_statsreadList SendPost sub-account statistics
sendpost_get_subaccount_statsreadGet SendPost sub-account aggregate statistics
sendpost_get_message_metadatareadGet SendPost message metadata
sendpost_list_domainsreadList SendPost sending domains
sendpost_get_domainreadGet SendPost sending domain
sendpost_list_suppressionsreadList SendPost suppressed recipients
sendpost_usage_statusmetaUsage status (free-tier meter)
sendpost_request_featuremetaRequest a missing feature
sendpost_upgrademetaUpgrade to Pro or Pro+
sendpost_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 sendpost_upgrade (it returns a Stripe Checkout link). Cancel any time with sendpost_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running sendpost_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

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