Sender MCP server

Connect Sender to Claude, ChatGPT, Cursor, Claude Code, Codex, Gemini, GitHub Copilot and any other MCP client, for your whole team. Metorial adds security, governance, and tracing, and gives everyone one Magic MCP URL to connect.

What you can do with the Sender MCP server

Ask your agent in plain language. Each of these maps to a real tool on the server.

  • Use the list subscribers tool in Sender
  • Use the manage subscriber groups tool in Sender
  • Use the delete subscribers tool in Sender
  • Use the create campaign tool in Sender
  • Use the get subscriber tool in Sender
  • Use the manage group tool in Sender

Supported Tools

list_subscribers

List Subscribers

Retrieves a paginated list of all subscribers in your Sender account. Optionally filter by a specific group to see only its members. Returns subscriber details including email, name, status, and group memberships.

manage_subscriber_groups

Manage Subscriber Groups

Adds or removes subscribers from a group. Provide the group ID, an action (add or remove), and a list of subscriber email addresses. Returns individual results when available, or an overall confirmation when Sender omits the per-subscriber breakdown.

delete_subscribers

Delete Subscribers

Permanently deletes one or more subscribers from your Sender account by their email addresses. This action is irreversible.

create_campaign

Create Campaign

Creates a new email campaign in Sender as a draft. Configure the subject, sender information, content, and target groups or segments. The campaign is created in DRAFT status and must be sent separately.

get_subscriber

Get Subscriber

Retrieves detailed information about a specific subscriber. Look up by email address, phone number, or subscriber ID. Returns subscriber profile data, subscription statuses, group memberships, and custom field values.

manage_group

Manage Group

Creates, retrieves, or deletes a subscriber group. Groups function as mailing lists in Sender. You can create a new group, get details of an existing one, or delete a group by ID.

start_workflow

Start Workflow

Enrolls a subscriber into a marketing automation workflow by their email address. The workflow will begin executing its configured sequence of steps (emails, SMS, delays, conditions, actions) for the subscriber.

list_segments

List Segments

Retrieves a paginated list of all subscriber segments in your Sender account. Segments are dynamic filters that automatically update based on criteria like engagement, behavior, or subscriber attributes.

create_subscriber

Create Subscriber

Creates a new subscriber or updates an existing one in Sender. Allows setting subscriber details, assigning them to groups, and populating custom fields. If a subscriber with the given email already exists, their data will be updated.

update_subscriber

Update Subscriber

Updates an existing subscriber's information in Sender. You can modify their name, phone, group assignments, custom fields, and subscription statuses. Identify the subscriber by their email, phone, or subscriber ID.

get_campaign_statistics

Get Campaign Statistics

Retrieves engagement statistics for a specific campaign, including opens and clicks with subscriber-level detail. Choose which metric to retrieve. Returns paginated results with email addresses and timestamps.

list_campaigns

List Campaigns

Retrieves a paginated list of email campaigns in your Sender account. Optionally filter by status (DRAFT, SCHEDULED, SENDING, SENT). Returns campaign details including subject, status, and timestamps.

list_groups

List Groups

Retrieves a paginated list of all subscriber groups (mailing lists) in your Sender account. Returns group details including subscriber counts and engagement metrics.

send_transactional_email

Send Transactional Email

Sends a transactional email via Sender. Supports two modes: send directly with custom content (subject, HTML/text body), or send using a pre-built campaign template by providing a campaignId. Supports personalization variables (Liquid syntax), attachments via public URLs, and custom headers.

list_workflows

List Workflows

Lists automation workflows and their statuses. Use workflowId with start_workflow to enroll a subscriber in an active workflow.

get_campaign

Get Campaign

Retrieves an email campaign with its sender, status, content, audience IDs, and timestamps. Discover campaign IDs with list_campaigns.

list_fields

List Fields

Lists subscriber custom fields with the fieldName keys accepted by create_subscriber and update_subscriber.

Connect Sender to your AI client

Every client uses the same Magic MCP URL, and so does any other MCP client. Add it once and sign in with SSO.

  1. Enable Sender in Metorial. In your Metorial portal, enable the Sender MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
  2. Add a custom connector. Open Customize, then Connectors. Select Add, then Custom, then Web.
  3. Paste your Metorial MCP URL. Name it Metorial, paste your Magic MCP URL (<your-magic-mcp-url>) and continue.
  4. Sign in. Select Add and sign in to load Sender tools.

Run Sender through the Metorial gateway

One governed layer for every app your agents reach, not a separate connector per tool.

  • Give Sender and every other app to your whole team through one MCP gateway, behind your SSO.
  • Scope which teams and agents can use Sender tools with role-based access control, and trace every call.
  • Prefer to run it yourself? Metorial is open source and self-hostable.

More integrations teams use with Sender

Slack

Slack: connect with bot OAuth or user OAuth to work with messages, conversations, search, files, Canvases, Lists, profiles, reactions, reminders, and workspace productivity settings.

Salesforce

Manage CRM data including Accounts, Contacts, Leads, Opportunities, Cases, and custom objects. Create, read, update, and delete records. Query data using SOQL and search across objects using SOSL. Perform bulk data operations for large-scale imports, exports, and migrations. Execute composite requests to batch multiple operations in a single API call. Access analytics, reports, and dashboards. Manage files and attachments associated with records. Interact with Chatter feeds, posts, and groups for social collaboration. Manage org metadata including custom objects, fields, layouts, and workflows. Query data using GraphQL for precise data retrieval across related objects.

Apolloio

Search and prospect B2B contacts and companies from a database of over 275 million people and 70 million organizations. Enrich people and company data with emails, phone numbers, and firmographic details. Create and manage contacts, accounts, deals, and tasks. Add contacts to email sequences and manage sequence statuses. Log and search call records. Perform bulk operations for contact creation, account creation, task creation, and data enrichment.

Sharepoint

Manage SharePoint sites, document libraries, lists, and files. Create, read, update, and delete lists and list items with custom columns. Resolve site users to numeric Person/Group LookupId values. Upload, download, move, copy, and version files in document libraries. Search across sites, files, folders, lists, and list items using Microsoft Search. Manage permissions at site, list, and item levels with granular access control. Define and manage content types and site columns. Retrieve site properties and search for sites across Microsoft 365.

Microsoft Outlook

Send, read, reply to, forward, and manage email messages in user mailboxes. Organize messages into folders, apply categories, flags, and importance levels. Manage file and item attachments. Create, update, delete, and respond to calendar events and meetings. Find available meeting times, manage attendees, handle recurrence, and work with shared or delegated calendars. Create, read, update, and delete contacts, organize them into contact folders, and manage contact photos. Manage tasks and task lists via Microsoft To Do, including due dates, reminders, recurrence, and checklist items. Support for Focused Inbox, @-mentions, mail tips, send-on-behalf, and send-as capabilities.

Hubspot

Create, read, update, and delete CRM objects including contacts, companies, deals, tickets, and custom objects. Manage associations between CRM records. Track engagements such as calls, emails, meetings, notes, and tasks. Send transactional and marketing emails, manage campaigns, and handle subscription preferences. Build and manage marketing workflows, sequences, and automation actions. Manage CMS content including blog posts, landing pages, and HubDB tables. Handle commerce data including products, orders, invoices, quotes, and payments. Create and manage contact lists for segmentation. Configure deal, ticket, and order pipelines with custom stages. Search and filter CRM records. Bulk import and export CRM data. Manage users, teams, and account settings.

Technical notes for Sender

Manage subscribers, subscription statuses, and group memberships. Discover custom fields and automation workflows, create and inspect email campaign drafts, send transactional emails with templates and personalization, and retrieve campaign opens and clicks.

Frequently asked questions

Common questions about connecting Sender to AI agents with Metorial.

  1. How many tools does the Sender MCP server have?
    The Sender MCP server exposes 17 tools, including List Subscribers, Manage Subscriber Groups, Delete Subscribers. Each one is governed and traced through Metorial.
  2. Sender exposes tools your agents call on demand; it does not publish event triggers yet. Everything still runs through one governed MCP URL.
  3. Any MCP client, including VS Code, Windsurf, Zed, OpenCode and Grok. Each one reaches the Sender MCP server through the same Metorial URL.
  4. Use role-based access control to decide which teams, users, and agents can use Sender and which of its tools they can call.
  5. Yes. Metorial is open source, so you can run the Sender MCP server yourself or use the hosted gateway.

Connect Sender to production AI agents

See how Metorial gives your team governed access to Sender, with tracing and security controls built in.