# Sender — MCP server on mcp.ai
> Connect your Sender account and use 8 tools for email newsletters straight from your AI agent. Connect with your own API key. Email marketing platform for creating campaigns, automating workflows, and tracking results.

By: mcp.ai · official
Page: https://mcp.ai/sender

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_sender?ms=1787296080000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/sender/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/sender/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/sender/skill.md
Postman collection (v2.1): https://mcp.ai/sender/postman.json

## Tools
- sender_create_field(type: string, title: string) — Tool to create a new custom subscriber field in Sender.net. Use when you need to add custom fields for email personalization, segmentation, or storing additional subscriber information like company na
- sender_create_or_update_subscriber(email: string, phone?: string, fields?: object, groups?: string[], lastname?: string, firstname?: string, trigger_automation?: boolean) — Tool to create a new subscriber or update an existing one in Sender.net. Use when you need to add new subscribers to your email list or update existing subscriber information. This performs an upsert 
- sender_get_all_fields() — Tool to retrieve a list of all custom subscriber fields configured in the Sender.net account. Use when you need to view available fields for email personalization, segmentation, or managing subscriber
- sender_get_all_workflows() — Tool to retrieve a list of all automation workflows in the Sender account. Use when you need to view or manage automation workflows.
- sender_get_campaign_by_id(campaign_id: string) — Tool to retrieve a specific campaign by its unique ID from Sender. Use when you need detailed information about a campaign including delivery metrics and engagement statistics.
- sender_get_group_by_id(group_id: string) — Tool to retrieve a specific subscriber group by its unique ID from Sender. Use when you need detailed information about a single group including subscriber counts.
- sender_get_subscriber_by_id(subscriber_id: string) — Tool to retrieve a specific subscriber by their unique ID from Sender. Use when you need to fetch detailed information about a single subscriber including their status, groups, and custom fields.
- sender_update_subscriber_fields(email?: string, groups?: string[], lastname?: string, firstname?: string, subscriber_id: string) — Tool to update custom fields and information for an existing subscriber in Sender.net. Use when you need to modify subscriber details such as email, first name, last name, groups, or custom fields for

## Example prompts
- "What can I do in Sender?"
- "Show me a summary of my Sender account"

## Links
Docs: https://mcp.ai/docs/mcps/sender
Website: https://mcp.ai/mcps/sender