cli

type CLIArgs struct {
	EnvPath      string   // Path to an SMTP config JSON file
	CSVPath      string   // Path to recipient CSV file
	TemplatePath string   // Path to HTML email template
	Subject      string   // Subject line (supports templating with {{ .name }})
	DryRun       bool     // If true, render but do not send emails
	ShowPreview  bool     // If true, serve rendered HTML via localhost
	PreviewPort  int      // Port to run the preview server on
	Concurrency  int      // Number of parallel SMTP workers
	RetryLimit   int      // Max retry attempts for failed sending
	BatchSize    int      // Number of emails sent per SMTP batch
	SheetURL     string   // Optional Google Sheet URL for CSV import
	Filter       string   // Logical filter expression for recipients
	Attachments  []string // File paths to attach to every email
}