MinuteMail

Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools

CommunityOnlineAPI key requiredGlobalFreeRead-only

What it can do

What data it sees

Do you need an account

An API key from the service settings is required

Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools

How to connect

How to connect MinuteMail to Claude

The server address to paste into Claude settings:

https://mcp.minutemail.co/mcp

Open Claude (claude.ai or the desktop app).
Go to Settings → Connectors.
Click Add custom connector.
Paste the server address copied below into Remote MCP server URL and click Add.
In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect MinuteMail to ChatGPT

The server address to paste into ChatGPT settings:

https://mcp.minutemail.co/mcp

Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
Open Settings → Connectors and click Create.
Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect MinuteMail to Cursor

The server address to paste into Cursor settings:

https://mcp.minutemail.co/mcp

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (40)

Raw names from tools/list. Only developers need these.

mailboxes.list	List the tenant's active mailboxes (owner is derived from the API key). Optionally look up a single mailbox by exact address.
mailboxes.create	Create a new temporary mailbox. The domain defaults to the tenant's default domain; the owner is always the API key's owner.
mailboxes.get	Fetch a single mailbox by ID.
mailboxes.delete	Delete a mailbox and its contents by ID.
mailboxes.delete_bulk	Delete several mailboxes at once by ID.
mails.list	List the emails in a mailbox, newest first.
mails.inject	Inject a simulated inbound email into a mailbox (multipart upload). No external mail is sent; use this to simulate inbound mail for flow testing.
mails.get	Fetch a single email by ID, including body and attachment metadata.
mails.delete	Delete a single email.
mails.delete_bulk	Delete several emails of one mailbox at once.
attachments.list	List the attachments of an email (metadata only).
attachments.add	Attach a file to a test-injected email (base64 payload).
attachments.get	Download an attachment. The file contents are returned base64-encoded in the JSON "data" field.
attachments.delete	Delete a single attachment.
attachments.delete_bulk	Delete several attachments of one email at once.
archived.list	List the tenant's archived (expired but recoverable) mailboxes.
archived.get	Fetch a single archived mailbox by ID.
archived.delete	Permanently delete an archived mailbox.
archived.reactivate	Reactivate an archived mailbox back to active state.
domains.list	List the tenant's custom domains with their DNS verification status.
domains.register	Register a new custom domain. DNS records (TXT token + MX) must then be added before verification can succeed.
domains.verify	Trigger DNS verification (TXT + MX) of a registered domain.
domains.delete	Delete a registered custom domain.
team.members.list	List the tenant's team members.
team.members.add	Add a team member directly (no invitation flow).
team.members.get	Fetch a single team member by ID.
team.members.delete	Remove a team member.
team.invitations.create	Create a team invitation for an email address (SMTP invite is sent by the team service).
team.invitations.list	List the tenant's team invitations.
team.invitations.delete	Revoke a team invitation.
identities.list	List the tenant's mock identities, optionally filtered by OAuth client or mailbox address.
identities.create	Create a mock identity bound to a mailbox for OAuth flow testing.
identities.get	Fetch a single mock identity by ID.
identities.update	Update a mock identity: profile fields, isActive (activate/deactivate), emailVerified, and custom claims merged into the ID token and userinfo.
identities.delete	Delete a mock identity.
oauth.clients.list	List the tenant's OAuth clients for mock identity testing.
oauth.clients.create	Register an OAuth client for mock identity flows. The plaintext clientSecret is returned once at creation.
oauth.clients.get	Fetch a single OAuth client by its public client ID.
oauth.clients.delete	Delete an OAuth client by its public client ID.
oauth.clients.rotate_secret	Rotate an OAuth client's secret. The new plaintext secret is returned once.