# Bigmailer — how to use (mcp.ai)

Connect your Bigmailer account and use 57 tools for email newsletters straight from your AI agent. Connect with your own API key. BigMailer is an email marketing platform designed for managing multiple brands, offering features like white-labeling, automation, and integration with Amazon SES.

## Option A — via MCP (recommended)
Remote MCP endpoint (HTTP, streamable): `https://api.mcp.ai/p_bigmailer?ms=1787291280000`
Add it as a custom/remote MCP connector in your client (Claude, Cursor, VS Code…), then authenticate when prompted. Once connected, ask the agent to use the server's tools (e.g. `bigmailer_create_brand`).

## Option B — via direct REST API
Base URL: `https://api.mcp.ai/api/bigmailer`
Auth: `Authorization: Bearer sk_live_…` — create a workspace API key at https://mcp.ai/settings/api-keys
Discover endpoints: `GET https://api.mcp.ai/api/bigmailer/_endpoints`

### Endpoints
- `POST https://api.mcp.ai/api/bigmailer/create/brand` — Tool to create a new brand in BigMailer. Brands are used to organize email campaigns and define default sending settings. Requires at minimum a brand name, from_name, and from_email. Returns the uniqu
  - body: { url?: string, logo?: string, name: string, from_name: string, from_email: string, connection_id?: string, contact_limit?: integer, max_soft_bounces?: integer, unsubscribe_text?: string, bounce_danger_percent?: integer }
- `POST https://api.mcp.ai/api/bigmailer/create/brand/property` — Tool to create a brand property in BigMailer. Use when you need to define a custom property for a brand that can be referenced in email templates via merge tags. The merge_tag_name allows the property
  - body: { name: string, is_html?: boolean, brand_id: string, string_value?: string, merge_tag_name?: string }
- `POST https://api.mcp.ai/api/bigmailer/create/bulk/campaign` — Tool to create a bulk email campaign in BigMailer. Use when you need to send marketing emails to multiple recipients. The campaign can be sent immediately or scheduled for later. Throttling options al
  - body: { html?: string, name: string, text?: string, ready?: boolean, preview?: string, subject?: string, brand_id: string, list_ids?: string[], reply_to?: object, segment_id?: string, link_params?: string, template_id?: string, track_opens?: boolean, from_address?: object, track_clicks?: boolean, scheduled_for?: integer, recipient_name?: string, message_type_id?: string, throttling_type?: string, excluded_list_ids?: string[], throttling_amount?: integer, throttling_period?: integer, track_text_clicks?: boolean, suppression_list_id?: string }
- `POST https://api.mcp.ai/api/bigmailer/create/contact` — Tool to create a new contact in BigMailer within a specified brand. Use when you need to add contacts to your mailing lists with optional custom fields and subscription settings. The contact's email a
  - body: { email: string, brand_id: string, list_ids?: string[], field_values?: object[], validate_email?: boolean, unsubscribe_all?: boolean, unsubscribe_ids?: string[] }
- `POST https://api.mcp.ai/api/bigmailer/create/contact/batch` — Tool to create a batch of contacts in BigMailer for a specific brand. Use when you need to upload multiple contacts (1-1000) at once. Supports custom fields, list assignments, and unsubscribe operatio
  - body: { items: object[], brand_id: string, validate_emails?: boolean }
- `POST https://api.mcp.ai/api/bigmailer/create/field` — Tool to create a custom field in a BigMailer brand. Custom fields allow you to store additional contact information (text, date, or integer values). Use when you need to add a new field to track conta
  - body: { name: string, type: string, brand_id: string, sample_value?: string, merge_tag_name?: string }
- `POST https://api.mcp.ai/api/bigmailer/create/list` — Creates a new contact list within a specified brand in BigMailer. Use this to organize and segment contacts. The list must be associated with an existing brand. Use BIGMAILER_LIST_ALL_BRANDS to retrie
  - body: { name: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/create/segment` — Tool to create a segment in BigMailer for a specific brand. Segments allow filtering contacts based on conditions like campaign activity (opened, clicked) or custom field values. Use when you need to 
  - body: { name: string, brand_id: string, operator: string, conditions: object[] }
- `POST https://api.mcp.ai/api/bigmailer/create/suppression/list` — Tool to upload a suppression list for a brand in BigMailer. Use when you need to add email addresses that should be excluded from campaigns. The file must be a CSV with email addresses in the first co
  - body: { file: object, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/create/template` — Tool to create a new email or page template in BigMailer. Templates can be used with bulk campaigns to define the HTML structure. Use when you need to create reusable email designs or landing pages. T
  - body: { html: string, name: string, type: string, brand_id: string, shared_with_account?: boolean }
- `POST https://api.mcp.ai/api/bigmailer/create/transactional/campaign` — Creates a new transactional campaign within a specified brand in BigMailer. Transactional campaigns are used for sending automated emails like welcome emails, password resets, order confirmations, etc
  - body: { name: string, subject: string, brand_id: string, reply_to?: object, from_name: string, from_email: string, description?: string, html_content: string, text_content?: string }
- `POST https://api.mcp.ai/api/bigmailer/create/user` — Tool to create a new user in BigMailer. Use when you need to add team members with specific roles and permissions. Returns the unique UUID of the created user.
  - body: { role: string, email: string, allowed_brands?: string[], invitation_message?: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/brand/property` — Tool to delete a brand property from a brand in BigMailer. Use when you need to remove a custom property that was previously associated with a brand.
  - body: { brand_id: string, brand_property_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/contact` — Tool to delete a contact from a brand in BigMailer. Use when you need to remove a contact permanently from a brand's contact list.
  - body: { brand_id: string, contact_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/field` — Deletes a custom field from a specified brand in BigMailer. Custom fields are used to store additional contact information. This action permanently removes the field and cannot be undone. Use this whe
  - body: { brand_id: string, field_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/list` — Tool to delete a list from BigMailer. Use when you need to permanently remove a list from a brand. Returns the ID of the deleted list upon success.
  - body: { list_id: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/segment` — Tool to delete a segment from a brand in BigMailer. Use when you need to remove a segment that is no longer needed. Returns the ID of the deleted segment on success.
  - body: { brand_id: string, segment_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/template` — Tool to delete a template from BigMailer. Use when you need to permanently remove a template from a brand. Returns the ID of the deleted template upon success.
  - body: { brand_id: string, template_id: string }
- `POST https://api.mcp.ai/api/bigmailer/delete/user` — Tool to delete a user from BigMailer. Use when you need to permanently remove a user from the system. Returns the ID of the deleted user upon success.
  - body: { user_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/brand` — Tool to retrieve detailed information about a specific brand by its ID. Use when you need to get brand configuration, email settings, bounce thresholds, or other brand properties.
  - body: { brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/brand/property` — Tool to retrieve a specific brand property by its ID for a given brand. Use when you need to fetch details about a brand property, such as its name, merge tag name, value, or HTML status.
  - body: { brand_id: string, brand_property_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/bulk/campaign` — Tool to retrieve detailed information about a specific bulk campaign in BigMailer. Use when you need to get campaign details including status, content, recipient lists, and performance metrics like op
  - body: { brand_id: string, campaign_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/contact` — Tool to retrieve detailed information about a specific contact from BigMailer. Use when you need to fetch contact details including email, custom field values, list memberships, and engagement metrics
  - body: { brand_id: string, contact_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/contact/batch` — Tool to retrieve the status and results of a contact batch upload in BigMailer. Use when you need to check the processing status of a batch contact import or review the results of individual contacts 
  - body: { batch_id: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/field` — Tool to retrieve a custom field from a BigMailer brand. Use when you need to get details about a specific custom field including its ID, name, type, merge tag name, and sample value.
  - body: { brand_id: string, field_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/list` — Tool to retrieve details of a specific list within a brand. Use when you need to get information about a list such as its name, creation time, and whether it's the special system list containing all c
  - body: { list_id: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/segment` — Tool to retrieve a specific segment from BigMailer by brand ID and segment ID. Use when you need to get details about a segment including its conditions and operator.
  - body: { brand_id: string, segment_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/suppression/list` — Tool to retrieve details of a specific suppression list for a brand in BigMailer. Use when you need to get information about a suppression list including its file name, size, and creation timestamp.
  - body: { brand_id: string, suppression_list_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/template` — Tool to retrieve detailed information about a specific template by its ID. Use when you need to get template content, HTML body, type, creation time, or sharing settings.
  - body: { brand_id: string, template_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/transactional/campaign` — Tool to retrieve detailed information about a specific transactional campaign in BigMailer. Use when you need to get campaign details including status, content, tracking settings, and performance metr
  - body: { brand_id: string, campaign_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/user` — Tool to retrieve detailed information about a specific user by their ID. Use when you need to get user details including email, role, activation status, and brand permissions.
  - body: { user_id: string }
- `POST https://api.mcp.ai/api/bigmailer/get/user/info` — This tool retrieves information about the authenticated user in BigMailer using the GET /me endpoint. It requires only authentication and no additional parameters, making it ideal for verifying API co
- `POST https://api.mcp.ai/api/bigmailer/list/all/brands` — This tool retrieves a list of all brands associated with the authenticated BigMailer account. It allows users to view and manage their brands. The operation is executed via a simple GET request to the
  - body: { limit?: integer, cursor?: string }
- `POST https://api.mcp.ai/api/bigmailer/list/brand/properties` — Tool to retrieve a list of brand properties for a specific brand in BigMailer. Use when you need to view custom properties associated with a brand, such as merge tags and their values used in email ca
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/bulk/campaigns` — Tool to list bulk campaigns for a specified brand in BigMailer. Use when you need to retrieve all bulk email campaigns associated with a brand, including their status, statistics, and configuration. S
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/connections` — Tool to list all connections in your BigMailer account. Use when you need to retrieve connections for email delivery (e.g., AWS SES). Supports pagination for accounts with many connections.
  - body: { limit?: integer, cursor?: string }
- `POST https://api.mcp.ai/api/bigmailer/list/contacts` — Tool to list contacts for a brand in BigMailer. Use when you need to retrieve contacts from a specific brand, optionally filtered by list membership. Supports pagination for large contact lists.
  - body: { limit?: integer, cursor?: string, list_id?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/fields` — Tool to list custom fields for a brand in BigMailer. Use when you need to retrieve all custom fields defined for a specific brand, including field names, types, and merge tags.
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/lists` — Tool to retrieve all contact lists for a specified brand in BigMailer. Use when you need to view or manage contact lists within a brand, or when you need to get a list ID for other operations. Support
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/message/types` — Tool to list message types for a specific brand in BigMailer. Use when you need to retrieve available message type categories that can be used for organizing and categorizing email campaigns. Supports
  - body: { type?: string, limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/segments` — Tool to list segments for a brand in BigMailer. Use when you need to retrieve and view all segments associated with a specific brand. Segments are used to organize and filter contacts based on conditi
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/senders` — Tool to list all senders configured for a specific brand in BigMailer. Use when you need to retrieve sender identities (domains or email addresses) associated with a brand, including their verificatio
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/suppression/lists` — Tool to list suppression lists for a specific brand. Suppression lists contain contacts that should be excluded from campaigns. Use this to view and manage suppression lists associated with a brand. S
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/templates` — Tool to list templates for a brand in BigMailer. Use when you need to retrieve all templates associated with a specific brand. Templates can be email or SMS templates used for campaigns and transactio
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/transactional/campaigns` — Tool to list transactional campaigns for a specified brand in BigMailer. Use when you need to retrieve all transactional email campaigns associated with a brand, including their status, statistics, an
  - body: { limit?: integer, cursor?: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/list/users` — Tool to list all users in your BigMailer account. Use when you need to retrieve user information, check account access, or manage user permissions. Supports pagination for accounts with many users.
  - body: { limit?: integer, cursor?: string }
- `POST https://api.mcp.ai/api/bigmailer/update/brand` — Tool to update a brand in BigMailer. Use when you need to modify brand settings such as name, email defaults, contact limits, bounce settings, or branding elements. Only the fields provided in the req
  - body: { url?: string, logo?: string, name?: string, brand_id: string, from_name?: string, from_email?: string, connection_id?: string, contact_limit?: integer, max_soft_bounces?: integer, unsubscribe_text?: string, bounce_danger_percent?: integer }
- `POST https://api.mcp.ai/api/bigmailer/update/brand/property` — Tool to update a brand property in BigMailer. Use when you need to modify properties of an existing brand, such as the property name, merge tag name, string value, or HTML flag. At least one of the op
  - body: { name?: string, is_html?: boolean, brand_id: string, string_value?: string, merge_tag_name?: string, brand_property_id: string }
- `POST https://api.mcp.ai/api/bigmailer/update/bulk/campaign` — Tool to update an existing bulk campaign in BigMailer. Use when modifying campaign properties like name, subject, content, recipients, scheduling, or tracking settings. Only the name field is required
  - body: { html?: string, name: string, text?: string, ready?: boolean, preview?: string, subject?: string, brand_id: string, list_ids?: string[], reply_to?: object, segment_id?: string, campaign_id: string, link_params?: string, template_id?: string, track_opens?: boolean, from_address?: object, track_clicks?: boolean, scheduled_for?: integer, recipient_name?: string, message_type_id?: string, throttling_type?: string, excluded_list_ids?: string[], throttling_amount?: integer, throttling_period?: integer, track_text_clicks?: boolean, suppression_list_id?: string }
- `POST https://api.mcp.ai/api/bigmailer/update/contact` — Tool to update an existing contact in BigMailer. Use when you need to modify contact details, manage list subscriptions, or update field values. Supports multiple operation modes (add, replace, remove
  - body: { email?: string, brand_id: string, list_ids?: string[], contact_id: string, list_ids_op?: string, field_values?: object[], field_values_op?: string, unsubscribe_all?: boolean, unsubscribe_ids?: string[], unsubscribe_ids_op?: string }
- `POST https://api.mcp.ai/api/bigmailer/update/field` — Tool to update a custom field in BigMailer. Use when you need to modify the name, merge tag name, or sample value of an existing field within a brand. At least one of merge_tag_name, name, or sample_v
  - body: { name?: string, brand_id: string, field_id: string, sample_value?: string, merge_tag_name?: string }
- `POST https://api.mcp.ai/api/bigmailer/update/list` — Tool to update a list in BigMailer. Use when you need to rename an existing list within a brand. This action requires both the brand ID and list ID to identify the list to update.
  - body: { name: string, list_id: string, brand_id: string }
- `POST https://api.mcp.ai/api/bigmailer/update/segment` — Tool to update an existing segment in BigMailer. Use when modifying segment properties such as name, operator logic, or conditions. At least one field (name, operator, or conditions) should be provide
  - body: { name?: string, brand_id: string, operator?: string, conditions?: object[], segment_id: string }
- `POST https://api.mcp.ai/api/bigmailer/update/template` — Tool to update an existing email or page template in BigMailer. Use when you need to modify template properties such as name, HTML content, type, or sharing settings. Only the fields provided in the r
  - body: { html?: string, name?: string, type?: string, brand_id: string, template_id: string, shared_with_account?: boolean }
- `POST https://api.mcp.ai/api/bigmailer/update/transactional/campaign` — Tool to update a transactional campaign in BigMailer. Use when you need to modify campaign settings such as name, subject, content, tracking options, or activation status. Only the fields provided in 
  - body: { html?: string, name: string, text?: string, ready?: boolean, list_id?: string, preview?: string, subject?: string, brand_id: string, reply_to?: object, campaign_id: string, link_params?: string, template_id?: string, track_opens?: boolean, from_address?: object, track_clicks?: boolean, recipient_name?: string, message_type_id?: string, track_text_clicks?: boolean }
- `POST https://api.mcp.ai/api/bigmailer/update/user` — Tool to update a user in BigMailer. Use when you need to modify user settings such as email, role, or allowed brands. Only the fields provided will be updated.
  - body: { role?: string, email?: string, user_id: string, allowed_brands?: string[] }
- `POST https://api.mcp.ai/api/bigmailer/upsert/contact` — Tool to create or update a contact in a BigMailer brand. Use when you need to add a new contact or update an existing contact's information. If a contact with the given email already exists, it will b
  - body: { email: string, brand_id: string, list_ids?: string[], field_values?: object[], validate_email?: string, unsubscribe_all?: boolean, unsubscribe_ids?: string[] }

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

## More
- Page: https://mcp.ai/bigmailer
- Agent spec (llms.txt): https://mcp.ai/bigmailer/llms.txt
- Postman collection: https://mcp.ai/bigmailer/postman.json