> ## Documentation Index
> Fetch the complete documentation index at: https://developers.hubspot.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Enroll a contact

> Enroll a contact into a sequence using the specified sequence ID. This operation requires the user ID to be provided as a query parameter. The request body must include the contact ID, sender email, and sequence ID. This endpoint is useful for automating the enrollment of contacts into predefined sequences for streamlined communication and follow-up processes.

export const ScopesList = ({scopes = [], description = "This API requires one of the following scopes:"}) => {
  if (!scopes || scopes.length === 0) {
    return null;
  }
  const sortedScopes = scopes.sort((a, b) => a.localeCompare(b));
  return <div>
      <div className="text-sm mb-2">{description}</div>
      <div>
        {sortedScopes.map((scope, index) => <div key={index}>
            <code>
              <span className="text-xs">{scope}</span>
            </code>
          </div>)}
      </div>
    </div>;
};

export const SupportedProducts = ({marketing, sales, service, cms, data, commerce, crm, marketingLevel, salesLevel, serviceLevel, cmsLevel, dataLevel, commerceLevel, crmLevel}) => {
  const translations = {
    description: "Requires one of the following products or higher.",
    productNames: {
      marketing: "Marketing Hub",
      sales: "Sales Hub",
      service: "Service Hub",
      cms: "Content Hub",
      data: "Data Hub",
      commerce: "Revenue Hub",
      crm: "Smart CRM"
    },
    tiers: {
      free: "Free",
      starter: "Starter",
      professional: "Professional",
      enterprise: "Enterprise"
    }
  };
  const translateTier = tier => {
    if (!tier) return '';
    const lowerTier = tier.toLowerCase();
    return translations.tiers[lowerTier] || tier;
  };
  const products = [{
    name: marketing ? translations.productNames.marketing : '',
    level: translateTier(marketingLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/MarketingHub.svg",
    alt: "Marketing Hub"
  }, {
    name: sales ? translations.productNames.sales : '',
    level: translateTier(salesLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SalesHub.svg",
    alt: "Sales Hub"
  }, {
    name: service ? translations.productNames.service : '',
    level: translateTier(serviceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ServiceHub.svg",
    alt: "Service Hub"
  }, {
    name: cms ? translations.productNames.cms : '',
    level: translateTier(cmsLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ContentHub.svg",
    alt: "Content Hub"
  }, {
    name: data ? translations.productNames.data : '',
    level: translateTier(dataLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/DataHub.svg",
    alt: "Data Hub"
  }, {
    name: commerce ? translations.productNames.commerce : '',
    level: translateTier(commerceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base/subscription_key_icons/commerce_icon.svg",
    alt: "Revenue Hub"
  }, {
    name: crm ? translations.productNames.crm : '',
    level: translateTier(crmLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SmartCRM.svg",
    alt: "Smart CRM"
  }].filter(product => product.name && product.level);
  if (products.length === 0) return null;
  return <div>
      <div className="text-sm mb-2">{translations.description}</div>
      <div className={`grid ${products.length === 1 ? 'grid-cols-1' : 'grid-cols-2'} gap-1.5`}>
        {products.map((product, index) => <div key={index} style={{
    display: 'flex',
    alignItems: 'center'
  }}>
            <img src={product.icon} alt={product.alt} className="w-3.5 h-3.5 mr-1.5 mt-2.5 mb-2.5 flex-shrink-0 align-middle" />
            <span className="font-medium mr-1 text-sm">{product.name} -</span>
            <span className="text-sm">{product.level}</span>
          </div>)}
      </div>
    </div>;
};

<AccordionGroup>
  <Accordion title="Supported products" defaultOpen="true" icon="cubes">
    <SupportedProducts sales={true} service={true} salesLevel="PROFESSIONAL" serviceLevel="PROFESSIONAL" />
  </Accordion>

  <Accordion title="Required Scopes" icon="key">
    <ScopesList
      scopes={[
  'automation.sequences.enrollments.write'
]}
    />
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml specs/2026-09-beta/automation-sequences-v2026-09-beta.json POST /automation/sequences/2026-09-beta/enrollments
openapi: 3.0.1
info:
  title: Automation Sequences
  description: Basepom for all HubSpot Projects
  version: 2026-09-beta
  x-hubspot-product-tier-requirements:
    marketing: FREE
    sales: FREE
    service: FREE
    cms: FREE
    commerce: FREE
    crmHub: FREE
    dataHub: FREE
servers:
  - url: https://api.hubapi.com
security: []
tags:
  - name: Basic
  - name: Enrollment
paths:
  /automation/sequences/2026-09-beta/enrollments:
    post:
      tags:
        - Enrollment
      summary: Enroll a contact
      description: >-
        Enroll a contact into a sequence using the specified sequence ID. This
        operation requires the user ID to be provided as a query parameter. The
        request body must include the contact ID, sender email, and sequence ID.
        This endpoint is useful for automating the enrollment of contacts into
        predefined sequences for streamlined communication and follow-up
        processes.
      operationId: post-/automation/sequences/2026-09-beta/enrollments
      parameters:
        - name: userId
          in: query
          description: >-
            The unique identifier of the user performing the enrollment. This
            parameter is required.
          required: true
          style: form
          explode: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicSequenceEnrollmentRequest'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicSequenceEnrollmentLiteResponse'
        default:
          $ref: '#/components/responses/Error'
          description: ''
      security:
        - oauth2:
            - automation.sequences.enrollments.write
components:
  schemas:
    PublicSequenceEnrollmentRequest:
      required:
        - contactId
        - senderEmail
        - sequenceId
      type: object
      properties:
        contactId:
          type: string
          description: >-
            The unique identifier of the contact to be enrolled in the sequence.
            It is a string.
        senderAliasAddress:
          type: string
          description: >-
            An optional alias email address that can be used as the sender's
            address. It is a string.
        senderEmail:
          type: string
          description: >-
            The email address of the sender responsible for the sequence
            enrollment. It is a string.
        sequenceId:
          type: string
          description: >-
            The unique identifier of the sequence in which the contact is to be
            enrolled. It is a string.
    PublicSequenceEnrollmentLiteResponse:
      required:
        - enrolledAt
        - id
        - toEmail
        - updatedAt
      type: object
      properties:
        enrolledAt:
          type: string
          description: >-
            The date and time when the contact was enrolled in the sequence, in
            ISO 8601 format.
          format: date-time
        id:
          type: string
          description: The unique identifier for the sequence enrollment.
        toEmail:
          type: string
          description: The email address of the contact who is enrolled in the sequence.
        updatedAt:
          type: string
          description: >-
            The date and time when the sequence enrollment was last updated, in
            ISO 8601 format.
          format: date-time
    Error:
      required:
        - category
        - correlationId
        - message
      type: object
      properties:
        category:
          type: string
          description: >-
            The error category, indicating the general type of error that
            occurred.
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: >-
            Context about the error condition, represented as an object with
            additional properties that are arrays of strings.
          example: >-
            {invalidPropertyName=[propertyValue], missingScopes=[scope1,
            scope2]}
        correlationId:
          type: string
          description: >-
            A unique identifier for the request. Include this value with any
            error reports or support tickets. It is formatted as a UUID.
          format: uuid
          example: aeb5f871-7f07-4993-9211-075dc63e7cbf
        errors:
          type: array
          description: >-
            Further information about the error, represented as an array of
            ErrorDetail objects.
          items:
            $ref: '#/components/schemas/ErrorDetail'
        links:
          type: object
          additionalProperties:
            type: string
          description: >-
            A map of link names to associated URIs containing documentation
            about the error or recommended remediation steps.
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate.
          example: An error occurred
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error.
      example:
        message: Invalid input (details will vary based on the error)
        correlationId: aeb5f871-7f07-4993-9211-075dc63e7cbf
        category: VALIDATION_ERROR
        links:
          knowledge-base: https://www.hubspot.com/products/service/knowledge-base
    ErrorDetail:
      required:
        - message
      type: object
      properties:
        code:
          type: string
          description: >-
            The status code associated with the error detail, indicating the
            type of error encountered.
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: >-
            Context about the error condition, provided as an object with
            additional properties. This can include specific details such as
            missing scopes.
          example: '{missingScopes=[scope1, scope2]}'
        in:
          type: string
          description: >-
            The name of the field or parameter in which the error was found.
            This provides context about where the error occurred.
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate. This is a required field.
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error, helping to further classify the error.
  responses:
    Error:
      description: An error occurred.
      content:
        '*/*':
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://app.hubspot.com/oauth/authorize
          tokenUrl: https://api.hubapi.com/oauth/v1/token
          scopes:
            automation.sequences.enrollments.write: ''
            automation.sequences.read: ''
            automation.sequences.write: ''
            sequences-public-delete: ''

````