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Email Notifications

LiteLLM Email Notifications

Overview​

Send LiteLLM Proxy users emails for specific events.

CategoryDetails
Supported Events• User added as a user on LiteLLM Proxy
• Proxy API Key created for user
Supported Email Integrations• Resend API
• SMTP

Usage​

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LiteLLM Cloud: This feature is enabled for all LiteLLM Cloud users, there's no need to configure anything.

1. Configure email integration​

Get SMTP credentials to set this up

proxy_config.yaml
litellm_settings:
    callbacks: ["smtp_email"]

Add the following to your proxy env

SMTP_HOST="smtp.resend.com"
SMTP_TLS="True"
SMTP_PORT="587"
SMTP_USERNAME="resend"
SMTP_SENDER_EMAIL="notifications@alerts.litellm.ai"
SMTP_PASSWORD="xxxxx"

2. Create a new user​

On the LiteLLM Proxy UI, go to users > create a new user.

After creating a new user, they will receive an email invite a the email you specified when creating the user.

Email Templates​

1. User added as a user on LiteLLM Proxy​

This email is send when you create a new user on LiteLLM Proxy.

How to trigger this event

On the LiteLLM Proxy UI, go to Users > Create User > Enter the user's email address > Create User.

2. Proxy API Key created for user​

This email is sent when you create a new API key for a user on LiteLLM Proxy.

How to trigger this event

On the LiteLLM Proxy UI, go to Virtual Keys > Create API Key > Select User ID

On the Create Key Modal, Select Advanced Settings > Set Send Email to True.

Email Customization​

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Customizing Email Branding is an Enterprise Feature Get in touch with us for a Free Trial

LiteLLM allows you to customize:

  • Logo on the Email
  • Email support contact
  • Email signature
  • Email subject lines for different events

Environment Variables​

You can customize the following aspects of emails through environment variables:

# Email Branding
EMAIL_LOGO_URL="https://your-company.com/logo.png"  # Custom logo URL
EMAIL_SUPPORT_CONTACT="support@your-company.com"     # Support contact email
EMAIL_SIGNATURE="<p>Best regards,<br/>Your Company Team</p><p><a href='https://your-company.com'>Visit our website</a></p>"  # Custom HTML footer/signature

# Email Subject Lines
EMAIL_SUBJECT_INVITATION="Welcome to Your Company!"  # Subject for invitation emails
EMAIL_SUBJECT_KEY_CREATED="Your API Key is Ready"    # Subject for key creation emails

HTML Support in Email Signature​

The EMAIL_SIGNATURE environment variable supports HTML formatting, allowing you to create rich, branded email footers. You can include:

  • Text formatting (bold, italic, etc.)
  • Line breaks using <br/>
  • Links using <a href='...'>
  • Paragraphs using <p>
  • Company information and social media links
  • Legal disclaimers or terms of service links

Example HTML signature:

<p>Best regards,<br/>The LiteLLM Team</p>
<p>
  <a href='https://docs.litellm.ai'>Documentation</a> |
  <a href='https://github.com/BerriAI/litellm'>GitHub</a>
</p>
<p style='font-size: 12px; color: #666;'>
  This is an automated message from LiteLLM Proxy
</p>

Default Templates​

If environment variables are not set, LiteLLM will use default templates:

  • Default logo: LiteLLM logo
  • Default support contact: support@berri.ai
  • Default signature: Standard LiteLLM footer
  • Default subjects: "LiteLLM: {event_message}" (replaced with actual event message)

Template Variables​

When setting custom email subjects, you can use template variables that will be replaced with actual values:

# Examples of template variable usage
EMAIL_SUBJECT_INVITATION="Welcome to \{company_name\}!"
EMAIL_SUBJECT_KEY_CREATED="Your \{company_name\} API Key"

The system will automatically replace \{event_message\} and other template variables with their actual values when sending emails.