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Set up email backend for Label Studio Enterprise

In Label Studio Enterprise, you can configure email backends to enable password reset via email and receive notifications. There are three available options for setting up email backends:

  • Dummy console email backend - all emails will be printed in the app console.
  • SMTP backend
  • Sendgrid backend

Dummy Console Backend

The Dummy Console Email Backend is a simple option for testing purposes. When this backend is configured, all emails generated by the application will be printed in the application console, rather than being sent to recipients.

FROM_EMAIL = Label Studio <hello@labelstud.io>

# option 1: app console
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'

SMTP Backend

The SMTP (Simple Mail Transfer Protocol) Backend allows you to use a custom SMTP server to send emails. This provides flexibility in configuring email delivery options and can integrate with various email service providers.

More details can be found here: https://docs.djangoproject.com/en/4.2/topics/email/#smtp-backend. If your SMTP configuration is not compatible with certificate or hostname validation, we provide the label_studio.core.utils.mail.NoVerificationEmailBackend which can be used instead of Django’s default smtp.EmailBackend, but note that this option is less secure. See https://docs.djangoproject.com/en/5.0/releases/4.2/#miscellaneous for more information.

# SMTP server,
FROM_EMAIL=Label Studio <hello@labelstud.io>
EMAIL_BACKEND=django.core.mail.backends.smtp.EmailBackend
EMAIL_HOST=smtp.gmail.com
EMAIL_PORT=587
EMAIL_HOST_USER=USERNAME@gmail.com
EMAIL_HOST_PASSWORD=PASSWORD # It's your account password, or separate application password, if you have 2fa on your google account
EMAIL_USE_TLS=1
EMAIL_USE_SSL=0
# EMAIL_SSL_KEYFILE=/path/inside/of/ls/container/key  # optional
# EMAIL_SSL_CERTFILE=/path/inside/of/ls/container/cert  # optional
EMAIL_TIMEOUT=60

Sendgrid Backend

The Sendgrid Backend utilizes the Sendgrid API to send emails. This option requires an active Sendgrid account and API key for authentication. The Sendgrid backend offers an easy-to-use and reliable email delivery service.

# option 2: Sendgrid
EMAIL_BACKEND=sendgrid_backend.SendgridBackend
SENDGRID_API_KEY=<SENDGRID-API-KEY>
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