MCP server

Enginemailer MCP by usefulapi

io.usefulapi/enginemailer

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Read Enginemailer subscribers, lists and campaigns; add subscribers, create and send campaigns.

Website Source

At a glance

Type

MCP server

Publisher

usefulapi.io (verified by the MCP Registry)

Status

Working at last check

Tools

17

Token cost

About 4,473 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.enginemailer]
url = "https://enginemailer.usefulapi.io/mcp"

Gemini CLI

{"mcpServers":{"enginemailer":{"httpUrl":"https://enginemailer.usefulapi.io/mcp"}}}

Cursor

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

VS Code

{"servers":{"enginemailer":{"type":"http","url":"https://enginemailer.usefulapi.io/mcp"}}}

Antigravity

agy mcp add enginemailer https://enginemailer.usefulapi.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"enginemailer","server_url":"https://enginemailer.usefulapi.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"enginemailer","server_url":"https://enginemailer.usefulapi.io/mcp"}

Tools

• enginemailer_add_subscriber ~428 tokens
  WRITE: add a subscriber to the account (optionally into subcategories, with custom field values). Only add people who consented to marketing email. Free accounts may insert 50 subscribers a day, paid accounts 10,000. POST /restapi/subscriber/emsubscriber/insertSubscriber.
• enginemailer_assign_campaign_recipients ~280 tokens
  WRITE: set who a campaign will go to: all subscribers, or the subscribers in the given subcategory ids (match_type any = OR, all = AND). Does not send anything. Needs a paid account. POST /restapi/campaign/emcampaign/AssignRecipientList.
• enginemailer_check_transactional_report_export ~149 tokens
  Status of a report export (Processing or Complete); when complete it includes the CSV download URL. POST /RESTAPI/V2/Submission/Report/CheckExport (read-only).
• enginemailer_create_campaign ~387 tokens
  WRITE: create a campaign DRAFT. Nothing is sent: assign recipients with enginemailer_assign_campaign_recipients, then send with enginemailer_send_campaign. The sender domain must be verified in Enginemailer; max 200 campaigns per account. Needs a paid account. POST /restapi/Campaign/EMCampaign/Creat
• enginemailer_get_campaign_stats ~152 tokens
  Delivery results of a DELIVERED campaign: emails sent, delivered, bounces, opens, unique opens, clicks, unique clicks, unsubscribes, spam complaints. Needs a paid account. GET /restapi/campaign/emcampaign/getcampaigndeliverystatus.
• enginemailer_get_subscriber ~152 tokens
  One subscriber by email: id, status and all custom field values. GET /restapi/subscriber/emsubscriber/getSubscriber.
• enginemailer_list_campaign_categories ~94 tokens
  The categories that campaign recipients can be filtered by (id, name, description). Needs a paid account. GET /restapi/campaign/emcampaign/GetCategoryList.
• enginemailer_list_campaign_subcategories ~158 tokens
  The subcategories of one campaign category (id, name, description); use these ids in enginemailer_assign_campaign_recipients. Needs a paid account. GET /restapi/campaign/emcampaign/GetSubCategoryList.
• enginemailer_list_campaigns ~128 tokens
  List campaigns that have NOT been delivered yet (drafts and scheduled ones): id, name, subject, sender and schedule. Delivered campaigns are not listed by the API; use enginemailer_get_campaign_stats with a known id. Needs a paid account. GET /restapi/campaign/emcampaign/ListCampaign.
• enginemailer_list_custom_fields ~94 tokens
  The subscriber custom field definitions (key, name, type). Use the keys when adding or updating subscribers. GET /restapi/subscriber/emsubscriber/getCustomField.
• enginemailer_list_subscriber_categories ~162 tokens
  The subscriber category tree: each category with its subcategories (ids, names). Use the subcategory ids when adding or updating subscribers and when assigning campaign recipients. GET /restapi/subscriber/emsubscriber/getSubCategory.
• enginemailer_save_subscriber_category ~324 tokens
  WRITE: create a subscriber category (category_id 0) or update one (its id), with subcategories (subcategory_id 0 creates one). Names and descriptions max 128 characters. POST /restapi/subscriber/emsubscriber/updateCategory.
• enginemailer_send_campaign Sends messages · ~237 tokens
  WRITE, SENDS EMAIL TO CUSTOMERS NOW and cannot be undone: delivers the campaign to its assigned recipients immediately. The campaign needs at least one recipient and must not be scheduled or already delivered. Show the user the campaign and its audience and get their go-ahead first; set confirm to t
• enginemailer_send_transactional_email Sends messages · ~735 tokens
  WRITE, SENDS ONE EMAIL NOW and cannot be undone: submits a transactional email to one recipient (plus optional CC/BCC). Needs a sender address on a verified domain; give either subject + content_html, or a template_id from the Enginemailer portal (the template supplies subject and sender name). Tota
• enginemailer_start_transactional_report_export ~305 tokens
  Start a CSV export of the transactional email delivery report for a period (start date at most 60 days back). Returns an export id; poll it with enginemailer_check_transactional_report_export. Creates a report file only; nothing is sent. POST /RESTAPI/V2/Submission/Report/Export.
• enginemailer_unsubscribe_subscriber ~175 tokens
  WRITE: unsubscribe a subscriber so they no longer receive campaigns. Reversing it needs the subscriber to opt in again in Enginemailer. GET /restapi/subscriber/emsubscriber/unSubSubscriber.
• enginemailer_update_subscriber ~513 tokens
  WRITE: change an existing subscriber's subcategories and/or custom fields. subcategories_mode: append (default), remove (drop the given subcategories) or replace (the given list becomes the full list). custom_fields_mode: update_given (change only the given fields) or replace_all (default; fields no

Browse

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