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

# Update template

> Update an existing email template



## OpenAPI

````yaml openapi.json PATCH /templates/{id}
openapi: 3.0.3
info:
  title: MailGlyph API
  description: >-
    Email platform API for transactional emails, campaigns, and marketing
    automation
  version: 1.0.0
  contact:
    name: MailGlyph Support
    url: https://mailglyph.com
servers:
  - url: https://api.mailglyph.com
    description: Production server
security:
  - ApiKeyAuth: []
tags:
  - name: Public API
    description: Public API endpoints for sending emails and tracking events
  - name: Events
    description: Event ingestion and querying
  - name: Contacts
    description: Contact management operations
  - name: Templates
    description: Email template management
  - name: Campaigns
    description: Email campaign management
  - name: Segments
    description: Audience segmentation
  - name: Workflows
    description: Workflow automation
paths:
  /templates/{id}:
    patch:
      tags:
        - Templates
      summary: Update template
      description: Update an existing email template
      operationId: updateTemplate
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                subject:
                  type: string
                body:
                  type: string
                type:
                  type: string
                  enum:
                    - TRANSACTIONAL
                    - MARKETING
      responses:
        '200':
          description: Template updated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Template'
        '404':
          description: Template not found
components:
  schemas:
    Template:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        description:
          type: string
          nullable: true
        subject:
          type: string
        body:
          type: string
        text:
          type: string
          nullable: true
        from:
          type: string
          format: email
        fromName:
          type: string
          nullable: true
        replyTo:
          type: string
          format: email
          nullable: true
        type:
          type: string
          enum:
            - TRANSACTIONAL
            - MARKETING
        projectId:
          type: string
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: >-
        API Key authentication. **Secret keys (sk_*)** are required for all
        endpoints except `/v1/track`. **Public keys (pk_*)** only work with the
        `/v1/track` endpoint for client-side event tracking. Workspaces can have
        multiple active keys, and sender-domain operations enforce per-key
        domain scope when configured.

````

This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.