[ 'default' => [ 'sender' => $_ENV['MAIL_DEFAULT_SENDER'], 'senderName' => $_ENV['MAIL_DEFAULT_SENDER_NAME'] ], 'smtp-server' => [ 'host' => $_ENV['SMTP_HOST'], 'port' => (int)$_ENV['SMTP_PORT'] ?? 25, 'encryption' => $_ENV['SMTP_ENCRYPTION'], 'username' => $_ENV['SMTP_USERNAME'], 'password' => $_ENV['SMTP_PASSWORD'], ] ] ];