Mailzzy

connectsverified owner

api.mailzzy.com

Email marketing: campaigns, audiences, contacts, segments, templates and reports.

https://api.mailzzy.com/crm/mcp/WebsiteOAuthMCP 2025-11-25v1.0.0last checked 21 Oct 2026spoke MCP on 100% of 38 checks (30 days)initialize in 353 ms

Last checked 21 Oct 2026

✓Answered the MCP handshake (MCP 2025-11-25)
✓Auth detected: OAuth
✓Lists 49 tools
✓No blockers or warnings
✓Spoke MCP on 38 of 38 checks (30 days)

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The authorization server advertises RFC 7591 registration, so Claude Code can register itself and sign you in through the browser.

claude mcp add --transport http mailzzy https://api.mailzzy.com/crm/mcp/

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The authorization server advertises RFC 7591 registration, so Claude (claude.ai & Desktop) can register itself and sign you in through the browser.

Settings → Connectors → Add custom connector, then paste https://api.mailzzy.com/crm/mcp/.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The authorization server advertises RFC 7591 registration, so ChatGPT can register itself and sign you in through the browser.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://api.mailzzy.com/crm/mcp/.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The authorization server advertises RFC 7591 registration, so Cursor can register itself and sign you in through the browser.

{
  "mcpServers": {
    "mailzzy": {
      "url": "https://api.mailzzy.com/crm/mcp/"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The authorization server advertises RFC 7591 registration, so VS Code (Copilot) can register itself and sign you in through the browser.

{
  "servers": {
    "mailzzy": {
      "type": "http",
      "url": "https://api.mailzzy.com/crm/mcp/"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 21 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme	OAuth
Issuer	https://api.mailzzy.com/core
Dynamic client registration	✓Advertised (RFC 7591)
Client ID Metadata Document	✕Not advertised
PKCE	✓S256
Grant types	authorization_code, client_credentials, refresh_token, urn:ietf:params:oauth:grant-type:device_code
Scopes	mcp:read, mcp:write, mcp:send
Protected-resource metadata	✓Published (RFC 9728)
Anonymous access	Refused — credentials required
Documentation	https://mailzzy.com/docs/#mcp-overview

What the probe found

No CORS headers for browser-based clients

A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.

Tools

mcp_crm_assets_image_importmcp_crm_assets_image_uploadmcp_crm_audience_selectmcp_crm_automations_createmcp_crm_automations_getmcp_crm_automations_listmcp_crm_automations_set_stepsmcp_crm_automations_updatemcp_crm_campaign_drafts_createmcp_crm_campaign_drafts_updatemcp_crm_campaigns_cancelmcp_crm_campaigns_getmcp_crm_campaigns_listmcp_crm_campaigns_sendmcp_crm_campaigns_send_testmcp_crm_contacts_add_tagmcp_crm_contacts_bulk_createmcp_crm_contacts_createmcp_crm_contacts_deletemcp_crm_contacts_exportmcp_crm_contacts_export_statusmcp_crm_contacts_getmcp_crm_contacts_listmcp_crm_contacts_remove_from_groupmcp_crm_contacts_remove_tagmcp_crm_contacts_updatemcp_crm_contacts_upload_csvmcp_crm_groups_createmcp_crm_groups_listmcp_crm_reports_campaign_metricsmcp_crm_reports_campaign_performancemcp_crm_reports_domainmcp_crm_segments_bulk_createmcp_crm_segments_createmcp_crm_segments_filter_optionsmcp_crm_segments_getmcp_crm_segments_listmcp_crm_segments_previewmcp_crm_segments_updatemcp_crm_senders_getmcp_crm_senders_listmcp_crm_sending_domains_listmcp_crm_smtp_events_listmcp_crm_templates_createmcp_crm_templates_getmcp_crm_templates_listmcp_crm_templates_updatemcp_crm_txn_email_listmcp_crm_txn_email_send

Contract history

13 Oct 2026v1.0.0owner-reportedfirst recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/mailzzy/badge.svg)](https://mcpi.app/servers/mailzzy)