Install

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

Passed 5/5 checks · What you ask goes through the maker’s server (missive.usefulapi.io)

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 · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it

Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · Name
Checking the commands · copy buttons appear once they pass
Remote MCP server URL · Address
Checking the commands · copy buttons appear once they pass
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsMissive MCP by usefulapi
Done
Try it
Use Missive MCP by usefulapi and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Missive MCP by usefulapi or shows a Missive MCP by usefulapi 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 ChatGPT, depending on your plan

Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only

Open ChatGPT’s add-MCP page on the web
Plugins+Add custom MCP server
Done
Fill in the name and address
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Name · Name
Checking the commands · copy buttons appear once they pass
Connection · Address
Checking the commands · copy buttons appear once they pass
Done
Pick Missive MCP by usefulapi in a chat
Start a new chat and pick Missive MCP by usefulapi from your plugins before typing
Done
Try it
Use Missive MCP by usefulapi and tell me what you can do for me, then show me one thing
✓ If ChatGPT says it is using Missive MCP by usefulapi or shows a Missive MCP by usefulapi tool in the answer, you are connected

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

Works with Claude Code · about 2 min

No key, nothing to install

Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
Paste this command and press Enter
Checking the commands · copy buttons appear once they pass
Done
Type /mcp in Claude Code
You should see Missive MCP by usefulapi listed as connected
Done
Try it
Use Missive MCP by usefulapi and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Missive MCP by usefulapi or shows a Missive MCP by usefulapi 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 · about 2 min

No key, nothing to install

Click this button to open Cursor
Checking the commands · copy buttons appear once they pass
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Missive MCP by usefulapi and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Missive MCP by usefulapi or shows a Missive MCP by usefulapi 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 · about 2 min

No key, nothing to install

Click this button to open VS Code
Checking the commands · copy buttons appear once they pass
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Missive MCP by usefulapi and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Missive MCP by usefulapi or shows a Missive MCP by usefulapi 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 →

Address for apps that connect over the web

Address

Checking the commands · copy buttons appear once they pass

JSON settings are under “For developers” below

Stuck? Ask people who use Missive MCP by usefulapi💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

Checking the commands · copy buttons appear once they pass

Cursor (~/.cursor/mcp.json)

Checking the commands · copy buttons appear once they pass

VS Code (mcp.json)

Checking the commands · copy buttons appear once they pass

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

Which apps can use it

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

Connect over the internet in

Claude ChatGPT 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 Open WebUI Raycast

All apps, with pros and cons →

What it can do

Tool names and descriptions exactly as the server reported them on Nov 9, 2026. The maker wrote them, not us; we show them as plain text.

missive_list_conversations
List conversations (email/chat threads). Missive requires EXACTLY ONE mailbox-type filter — one of inbox / assigned / closed / flagged / snoozed / trashed / all / shared_label / team_inbox / team_all / organization. Missive: GET /conversations.
missive_get_conversation
Get a single conversation by id. Missive: GET /conversations/{id}.
missive_list_conversation_messages
List the messages (emails) in a conversation. Missive: GET /conversations/{id}/messages.
missive_get_message
Get a single message, including the full body. Missive: GET /conversations/{conversation_id}/messages/{id}.
missive_list_conversation_comments
List internal comments (team chat) on a conversation. Missive: GET /conversations/{id}/comments.
missive_list_conversation_drafts
List draft messages on a conversation. Missive: GET /conversations/{id}/drafts.
missive_list_conversation_posts
List posts (integration/app-generated items) on a conversation. Missive: GET /conversations/{id}/posts.
missive_list_contacts
List contacts in a contact book. Missive: GET /contacts.
missive_get_contact
Get a single contact by id. Missive: GET /contacts/{id}.
missive_list_contact_books
List contact books (address books). Missive: GET /contact_books.
missive_list_contact_groups
List contact groups or organizations within a contact book. Missive: GET /contact_groups.
missive_list_teams
List teams in the organization(s). Missive: GET /teams.
missive_list_users
List users (team members). Missive: GET /users.
missive_list_shared_labels
List shared labels (team-shared folders/tags). Missive: GET /shared_labels.
missive_list_organizations
List organizations you belong to. Missive: GET /organizations.
missive_list_responses
List canned responses / templates. Missive: GET /responses.
missive_create_draft
Create a draft email/message. WARNING: setting send=true SENDS a real email immediately (send_at schedules it) instead of saving a draft. Attach to an existing thread with `conversation`. Missive: POST /drafts.
missive_update_conversation
Update a conversation — assign/unassign users, add/remove shared labels, close/reopen, move to inbox, or set subject/color/team. Missive: PATCH /conversations/{id}.
missive_create_contact
Create a contact in the given contact book. Missive: POST /contacts.

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 13, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
✓ Pass
Still maintained
Code last changed yesterday
✓ Pass
Has a licence
Uses MIT
✓ Pass
Endpoint responds
Responded in 20 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 19 tool descriptions and found no hidden instructions to the AI

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.

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User reviews

No reviews yet

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Compared with others in Chat & emaili

More stars than 0% of the other 1994 servers in this category
Published to the registry more recently than 92% of the other 1994 servers in this category
Basic checks equal to or better than 100% of the other 1994 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 Missive MCP by usefulapi safe?

It passed 5 of 5 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 yesterday, and the latest version (1.38.0) 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 on the web (full MCP on Business and above; Pro read-only).

What can I use instead?

In the same category: Inbox Zero, draw.io, TradingMCP

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

Inbox Zero

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

by elie222Widely used★ 13KUpdated 43 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 3 days ago

Runs in the cloud✓ service owner · draw.io

How to connect

TradingMCP

Market analysis for AI assistants: screeners, multi-timeframe analysis, backtests, in-chat charts.

by atilaahmettanerWidely used★ 5.3KUpdated 22 days ago

Runs in the cloud

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.

Missive MCP by usefulapi

Manage Missive collaborative email and chat from Claude, Cursor, or any MCP client — read conversations, messages, comments, drafts and contacts, and create drafts, send email, and update conversations. Hosted, no local install: connect with your Missive API token.

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

Connect

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

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

On first connect you'll paste your Missive API token (Missive → Preferences → API → Create a new token; requires a Productive plan). It's validated, stored per-user, and scoped to you — no keys in config files.

Tools

Tool	Type	What it does
`missive_list_conversations`	read	List conversations
`missive_get_conversation`	read	Get conversation
`missive_list_conversation_messages`	read	List conversation messages
`missive_get_message`	read	Get message
`missive_list_conversation_comments`	read	List conversation comments
`missive_list_conversation_drafts`	read	List conversation drafts
`missive_list_conversation_posts`	read	List conversation posts
`missive_list_contacts`	read	List contacts
`missive_get_contact`	read	Get contact
`missive_list_contact_books`	read	List contact books
`missive_list_contact_groups`	read	List contact groups
`missive_list_teams`	read	List teams
`missive_list_users`	read	List users
`missive_list_shared_labels`	read	List shared labels
`missive_list_organizations`	read	List organizations
`missive_list_responses`	read	List responses
`missive_create_draft`	write	Create draft
`missive_update_conversation`	write	Update conversation
`missive_create_contact`	write	Create contact
`missive_usage_status`	meta	Usage status (free-tier meter)
`missive_request_feature`	meta	Request a missing feature
`missive_upgrade`	meta	Upgrade to Pro or Pro+
`missive_cancel_subscription`	meta	Cancel 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

Plan	Price	Limit
Free	$0	50 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 missive_upgrade (it returns a Stripe Checkout link). Cancel any time with missive_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running missive_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

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

Missive MCP by usefulapi

What it does

Install

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

Open ChatGPT’s add-MCP page on the web

Fill in the name and address

Pick Missive MCP by usefulapi in a chat

Try it

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Over the web

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

Inbox Zero

draw.io

TradingMCP

README from the maker

Missive MCP by usefulapi

Connect

Tools

Pricing

License