By default, the core functions of Infisical work without any email service configuration. Without email service, basic sign up/login and secret operations will function without any issue. However, the following functionality will be disabled.

  • Multi-factor authentication
  • Sending invite links via email for projects to teammates
  • Sending alerts such as suspicious login attempts


If you choose to setup email service, you need to configure the following SMTP environment variables:

  • SMTP_HOST: Hostname to connect to for establishing SMTP connections.
  • SMTP_USERNAME: Credential to connect to host (e.g. [email protected])
  • SMTP_PASSWORD: Credential to connect to host.
  • SMTP_PORT: Port to connect to for establishing SMTP connections.
  • SMTP_SECURE: If true, the connection will use TLS when connecting to server with special configs for SendGrid and Mailgun. If false (the default) then TLS is used if server supports the STARTTLS extension.
  • SMTP_FROM_ADDRESS: Email address to be used for sending emails (e.g. [email protected]).
  • SMTP_FROM_NAME: Name label to be used in From field (e.g. Team).

Below you will find details on how to configure common email providers: