---
title: Environment Variables
icon: TbServer
image: /images/user-guide/table-views/table.png
---

import OptionTable from '@site/src/theme/OptionTable'

# Setup Messaging & Calendar sync

Twenty offers integrations with Gmail and Google Calendar. To enable these features, you need to connect to register the following recurring jobs:
```
# from your worker container
yarn command:prod cron:messaging:messages-import
yarn command:prod cron:messaging:message-list-fetch
yarn command:prod cron:calendar:calendar-event-list-fetch
```

# Setup Environment Variables

## Frontend

<ArticleTable options={[
    ['REACT_APP_SERVER_BASE_URL', 'http://localhost:3000', 'Url of backend server'],
    ['GENERATE_SOURCEMAP', 'false', 'Generate source maps for debugging'],
    ['CHROMATIC_PROJECT_TOKEN', '', 'Chromatic token used for CI'],
    ]}></ArticleTable>


## Backend

### Config

<ArticleTable options={[
    ['PG_DATABASE_URL', 'postgres://user:pw@localhost:5432/default?connection_limit=1', 'Database connection'],
    ['PG_SSL_ALLOW_SELF_SIGNED', 'false', 'Allow self signed certificates'],
    ['REDIS_URL', 'redis://localhost:6379', 'Redis connection url'],
    ['FRONT_BASE_URL', 'http://localhost:3001', 'Url to the hosted frontend'],
    ['SERVER_URL', 'http://localhost:3000', 'Url to the hosted server'],
    ['PORT', '3000', 'Port'],
    ['CACHE_STORAGE_TYPE', 'redis', 'Cache type (memory, redis...)'],
    ['CACHE_STORAGE_TTL', '3600 * 24 * 7', 'Cache TTL in seconds']
    ]}></ArticleTable>

### Security

<ArticleTable options={[
    ['API_RATE_LIMITING_TTL', '100', 'API rate limiting time window'],
    ['API_RATE_LIMITING_LIMIT', '200', 'API rate limiting max requests'],
    ]}></ArticleTable>
### Tokens

<ArticleTable options={[
    ['ACCESS_TOKEN_SECRET', '<random>', 'Secret used for the access tokens'],
    ['ACCESS_TOKEN_EXPIRES_IN', '30m', 'Access token expiration time'],
    ['LOGIN_TOKEN_SECRET', '<random>', 'Secret used for the login tokens'],
    ['LOGIN_TOKEN_EXPIRES_IN', '15m', 'Login token expiration time'],
    ['REFRESH_TOKEN_SECRET', '<random>', 'Secret used for the refresh tokens'],
    ['REFRESH_TOKEN_EXPIRES_IN', '90d', 'Refresh token expiration time'],
    ['REFRESH_TOKEN_COOL_DOWN', '1m', 'Refresh token cooldown'],
    ['FILE_TOKEN_SECRET', '<random>', 'Secret used for the file tokens'],
    ['FILE_TOKEN_EXPIRES_IN', '1d', 'File token expiration time'],
    ['API_TOKEN_EXPIRES_IN', '1000y', 'Api token expiration time'],
    ]}></ArticleTable>

### Auth

<ArticleTable options={[
    ['MESSAGING_PROVIDER_GMAIL_ENABLED', 'false', 'Enable Gmail API connection'],
    ['CALENDAR_PROVIDER_GOOGLE_ENABLED', 'false', 'Enable Google Calendar API connection'],
    ['AUTH_GOOGLE_APIS_CALLBACK_URL', 'http://[YourDomain]/auth/google/redirect', 'Google APIs auth callback'],
    ['AUTH_PASSWORD_ENABLED', 'false', 'Enable Email/Password login'],
    ['AUTH_GOOGLE_ENABLED', 'false', 'Enable Google SSO login'],
    ['AUTH_GOOGLE_CLIENT_ID', '', 'Google client ID'],
    ['AUTH_GOOGLE_CLIENT_SECRET', '', 'Google client secret'],
    ['AUTH_GOOGLE_CALLBACK_URL', '', 'Google auth callback'],
    ['AUTH_MICROSOFT_ENABLED', 'false', 'Enable Microsoft SSO login'],
    ['AUTH_MICROSOFT_CLIENT_ID', '', 'Microsoft client ID'],
    ['AUTH_MICROSOFT_TENANT_ID', '', 'Microsoft tenant ID'],
    ['AUTH_MICROSOFT_CLIENT_SECRET', '', 'Microsoft client secret'],
    ['AUTH_MICROSOFT_CALLBACK_URL', 'http://[YourDomain]/auth/microsoft/redirect', 'Microsoft auth callback'],
    ['FRONT_AUTH_CALLBACK_URL', 'http://localhost:3001/verify ', 'Callback used for Login page'],
    ['IS_SIGN_UP_DISABLED', 'false', 'Disable sign-up'],
    ['PASSWORD_RESET_TOKEN_EXPIRES_IN', '5m', 'Password reset token expiration time'],
    ]}></ArticleTable>

### Email

<ArticleTable options={[
    ['EMAIL_FROM_ADDRESS', 'contact@yourdomain.com', 'Global email From: header used to send emails'],
    ['EMAIL_FROM_NAME', 'John from YourDomain', 'Global name From: header used to send emails'],
    ['EMAIL_SYSTEM_ADDRESS', 'system@yourdomain.com', 'Email address used as a destination to send internal system notification'],
    ['EMAIL_DRIVER', 'logger', "Email driver: 'logger' (to log emails in console) or 'smtp'"],
    ['EMAIL_SMTP_HOST', '', 'Email Smtp Host'],
    ['EMAIL_SMTP_PORT', '', 'Email Smtp Port'],
    ['EMAIL_SMTP_USER', '', 'Email Smtp User'],
    ['EMAIL_SMTP_PASSWORD', '', 'Email Smtp Password'],
  ]}></ArticleTable>

#### Email SMTP Server configuration examples

<ArticleTabs label1="Gmail" label2="Office365" label3="Smtp4dev">

  <ArticleTab>

  You will need to provision an [App Password](https://support.google.com/accounts/answer/185833).
  - EMAIL_SMTP_HOST=smtp.gmail.com
  - EMAIL_SMTP_PORT=465
  - EMAIL_SMTP_USER=gmail_email_address
  - EMAIL_SMTP_PASSWORD='gmail_app_password'

  </ArticleTab>

  <ArticleTab>

    Keep in mind that if you have 2FA enabled, you will need to provision an [App Password](https://support.microsoft.com/en-us/account-billing/manage-app-passwords-for-two-step-verification-d6dc8c6d-4bf7-4851-ad95-6d07799387e9).
    - EMAIL_SMTP_HOST=smtp.office365.com
    - EMAIL_SMTP_PORT=587
    - EMAIL_SMTP_USER=office365_email_address
    - EMAIL_SMTP_PASSWORD='office365_password'

  </ArticleTab>

  <ArticleTab>

    **smtp4dev** is a fake SMTP email server for development and testing.
    - Run the smtp4dev image: `docker run --rm -it -p 8090:80 -p 2525:25 rnwood/smtp4dev`
    - Access the smtp4dev ui here: [http://localhost:8090](http://localhost:8090)
    - Set the following env variables:
      - EMAIL_SMTP_HOST=localhost
      - EMAIL_SMTP_PORT=2525

  </ArticleTab>

</ArticleTabs>

### Storage

<ArticleTable options={[
    ['STORAGE_TYPE', 'local', "Storage driver: 'local' or 's3'"],
    ['STORAGE_S3_REGION', '', 'Storage Region'],
    ['STORAGE_S3_NAME', '', 'Bucket Name'],
    ['STORAGE_S3_ENDPOINT', '', 'Use if a different Endpoint is needed (for example Google)'],
    ['STORAGE_S3_ACCESS_KEY_ID', '', 'Optional depending on the authentication method'],
    ['STORAGE_S3_SECRET_ACCESS_KEY', '', 'Optional depending on the authentication method'],
    ['STORAGE_LOCAL_PATH', '.local-storage', 'data path (local storage)'],
    ]}></ArticleTable>

### Custom Code Execution

<ArticleTable options={[
  ['SERVERLESS_TYPE', 'local', "Serverless driver type: 'local' or 'lambda'"],
  ['SERVERLESS_LAMBDA_REGION', '', 'Lambda Region'],
  ['SERVERLESS_LAMBDA_ROLE', '', 'Lambda Role'],
  ['SERVERLESS_LAMBDA_ACCESS_KEY_ID', '', 'Optional depending on the authentication method'],
  ['SERVERLESS_LAMBDA_SECRET_ACCESS_KEY', '', 'Optional depending on the authentication method'],
]}></ArticleTable>

### Message Queue

<ArticleTable options={[
    ['MESSAGE_QUEUE_TYPE', 'bull-mq', "Queue driver: 'pg-boss' or 'bull-mq'"],
    ]}></ArticleTable>

### Logging

<ArticleTable options={[
    ['LOGGER_DRIVER', 'console', "Currently, only supports 'console'"],
    ['LOGGER_IS_BUFFER_ENABLED', 'true', 'Buffer the logs before sending them to the logging driver'],
    ['LOG_LEVELS', 'error,warn', "The loglevels which are logged to the logging driver. Can include: 'log', 'warn', 'error'"],
    ['EXCEPTION_HANDLER_DRIVER', 'sentry', "The exception handler driver can be: 'console' or 'sentry'"],
    ['SENTRY_ENVIRONMENT', 'main', 'The sentry environment used if sentry logging driver is selected'],
    ['SENTRY_RELEASE', 'latest', 'The sentry release used if sentry logging driver is selected'],
    ['SENTRY_DSN', 'https://xxx@xxx.ingest.sentry.io/xxx', 'The sentry logging endpoint used if sentry logging driver is selected'],
    ['SENTRY_FRONT_DSN', 'https://xxx@xxx.ingest.sentry.io/xxx', 'The sentry logging endpoint used by the frontend if sentry logging driver is selected'],
    ]}></ArticleTable>


### Data enrichment and AI

<ArticleTable options={[
    ['OPENAI_API_KEY', 'sk-proj-abcdabcd...', "OpenAI API key"],
    ['LLM_CHAT_MODEL_DRIVER', 'openai', "LLM provider"],
    ['LLM_TRACING_DRIVER', 'langfuse', "Where to output LangChain logs. 'langfuse' or 'console'."],
    ['LANGFUSE_SECRET_KEY', 'sk-lf-abcdabcd-abcd...', "Langfuse secret key"],
    ['LANGFUSE_PUBLIC_KEY', 'pk-lf-abcdabcd-abcd...', "Langfuse public key"],
]}></ArticleTable>

### Serverless functions
This feature is WIP and is not yet useful for most users.
<ArticleTable options={[
    ['SERVERLESS_TYPE', 'local', "Functions can either be executed through Lambda or directly by the main node process"],
    ['SERVERLESS_LAMBDA_REGION', 'us-east-1', 'If you use the Lambda driver, region of the Lambda function'],
    ['SERVERLESS_LAMBDA_ROLE', 'arn:aws:iam::121334:role/lambda-execution-role', "If you use the Lambda drive, name of the IAM role with the right permissions"],
]}></ArticleTable>




### Support Chat

<ArticleTable options={[
    ['SUPPORT_DRIVER', 'front', "Support driver ('front' or 'none')"],
    ['SUPPORT_FRONT_HMAC_KEY', '<secret>', 'Suport chat key'],
    ['SUPPORT_FRONT_CHAT_ID', '<id>', 'Support chat id'],
    ]}></ArticleTable>

### Telemetry

<ArticleTable options={[
    ['TELEMETRY_ENABLED', 'true', 'Change this if you want to disable telemetry'],
    ['TELEMETRY_ANONYMIZATION_ENABLED', 'true', 'Telemetry is anonymized by default, you probably don\'t want to change this'],
    ]}></ArticleTable>

### Debug / Development

<ArticleTable options={[
    ['DEBUG_MODE', 'true', 'Activate debug mode'],
    ['SIGN_IN_PREFILLED', 'true', 'Prefill the Signin form for usage in a demo or dev environment'],
    ]}></ArticleTable>

### Workspace Cleaning

<ArticleTable options={[
  ['WORKSPACE_INACTIVE_DAYS_BEFORE_NOTIFICATION', '', 'Number of inactive days before sending workspace deleting warning email'],
  ['WORKSPACE_INACTIVE_DAYS_BEFORE_DELETION', '', 'Number of inactive days before deleting workspace'],
  ]}></ArticleTable>

### Captcha

<ArticleTable options={[
    ['CAPTCHA_DRIVER', '', "The captcha driver can be 'google-recaptcha' or 'turnstile'"],
    ['CAPTCHA_SITE_KEY', '', 'The captcha site key'],
    ['CAPTCHA_SECRET_KEY', '', 'The captcha secret key'],
]}></ArticleTable>

<ArticleEditContent></ArticleEditContent>
