[ // smtp (Boolean) // Enables SMTP relaying for outbound emails 'smtp' => false, // smtp_server (String) // SMTP server host name 'smtp_server' => 'smtp.example.com', // smtp_port (Integer) // SMTP server port number 'smtp_port' => 25, // smtp_secure (String) // What kind of encryption to use on the SMTP connection. // Options: '', 'ssl' or 'tls'. 'smtp_secure' => '', // smtp_port_s (Integer) // Secure SMTP server port number 'smtp_port_s' => 465, // smtp_username (String) // SMTP server authentication user name // Empty string disables authentication 'smtp_username' => '', // smtp_password (String) // SMTP server authentication password // Empty string disables authentication 'smtp_password' => '', // smtp_from (String) // From address used when using the SMTP server // Example: no-reply@example.com 'smtp_from' => '', ], ];