> ## Documentation Index > Fetch the complete documentation index at: https://docs.base44.com/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > Internal links on these pages omit the .md extension. Append .md to a docs page URL, or send an Accept: text/markdown header, to get that page as markdown. # Customize application email > This API is in beta. Endpoints, fields, and behavior may still change, so avoid depending on it in production. Gives the app its own version of an application email, as an email template you can change. The template starts as a copy of the email the app sends today, with placeholders such as `{{first_name}}` and `{{action_url}}` where the recipient's details go. Ask the AI to change it through [Send chat message](/api-reference/send-chat-message). Base44 sends four application emails for the app: password reset (`password_reset`), sign-up verification (`email_verification`), invitation (`user_invite`), and access approval (`access_approved`). They use the app's brand automatically. From now on, the app sends its own version. For `email_verification`, that also needs the app to send from its own email domain and the version to pass a review, and [Preview application email](/api-reference/preview-application-email) reports in `authored_status` which version is sent. Delete the template with [Delete email template](/api-reference/delete-email-template) to go back to the Base44 version. Calling this again returns the template the app already has, with `created` set to `false`. Creating the template needs a paid workspace plan. This is limited to 10 requests per minute per app for each workspace's personal API keys, so every key in a workspace shares one allowance. Some workspaces have a different limit. This endpoint accepts a personal API key belonging to a user with editor access to the app. A read-only key is refused, and workspace API keys are not accepted. ## OpenAPI ````yaml /developers/references/app-management/app-management-openapi.json post /api/apps/{app_id}/emails/system/{email_type}/materialize openapi: 3.1.0 info: title: Base44 App Management API version: 1.0.0 servers: - url: https://app.base44.com security: - PersonalAccessTokenAuth: [] paths: /api/apps/{app_id}/emails/system/{email_type}/materialize: post: summary: Customize application email description: >- This API is in beta. Endpoints, fields, and behavior may still change, so avoid depending on it in production. Gives the app its own version of an application email, as an email template you can change. The template starts as a copy of the email the app sends today, with placeholders such as `{{first_name}}` and `{{action_url}}` where the recipient's details go. Ask the AI to change it through [Send chat message](/api-reference/send-chat-message). Base44 sends four application emails for the app: password reset (`password_reset`), sign-up verification (`email_verification`), invitation (`user_invite`), and access approval (`access_approved`). They use the app's brand automatically. From now on, the app sends its own version. For `email_verification`, that also needs the app to send from its own email domain and the version to pass a review, and [Preview application email](/api-reference/preview-application-email) reports in `authored_status` which version is sent. Delete the template with [Delete email template](/api-reference/delete-email-template) to go back to the Base44 version. Calling this again returns the template the app already has, with `created` set to `false`. Creating the template needs a paid workspace plan. This is limited to 10 requests per minute per app for each workspace's personal API keys, so every key in a workspace shares one allowance. Some workspaces have a different limit. This endpoint accepts a personal API key belonging to a user with editor access to the app. A read-only key is refused, and workspace API keys are not accepted. operationId: >- materialize_system_email_route_api_apps__app_id__emails_system__email_type__materialize_post parameters: - name: app_id in: path required: true schema: type: string description: ID of the app the emails belong to. title: App Id description: ID of the app the emails belong to. example: 6820f3a4e7b91d003c45a1f2 - name: email_type in: path required: true schema: type: string description: >- The application email: `password_reset`, `email_verification`, `user_invite`, or `access_approved`. title: Email Type description: >- The application email: `password_reset`, `email_verification`, `user_invite`, or `access_approved`. example: password_reset responses: '200': description: The app's template for the email. content: application/json: schema: $ref: '#/components/schemas/CustomizedApplicationEmail' '401': description: Missing or invalid credentials. '402': description: >- The app has no template for this email yet, and the workspace's plan doesn't include one. '403': description: >- You don't have editor access to this app, the app is blocked, your API key is read-only, or you used a workspace API key. '404': description: >- App not found, or `email_type` isn't one of the four application emails. '429': description: >- Rate limit exceeded. The base limit is 10 requests per minute. See [Rate limits](/developers/references/apps-api/get-started/rate-limits) for the multiplier your plan gets. components: schemas: CustomizedApplicationEmail: properties: template_id: type: string title: Template Id description: >- ID of the template. Use it with [Get email template](/api-reference/get-email-template). example: 68c1f0a2b3d4e5f6a7b8c9d0 name: type: string title: Name description: >- Name of the template: `PasswordReset`, `EmailVerification`, `UserInvite`, or `AccessApproved`. example: PasswordReset created: type: boolean title: Created description: >- `true` when this request created the template, and `false` when the app already had it. example: true type: object required: - template_id - name - created title: CustomizedApplicationEmail description: The app's own template for an application email. securitySchemes: PersonalAccessTokenAuth: type: http scheme: bearer description: 'Personal access token, sent as `Authorization: Bearer `.' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.