smtp

type Config struct {
	Host     string
	Port     int
	Username string
	Password string
	SSL      bool
	From     string
}

type Sender interface {
	HealthCheck() bool
	SendPlainMessage(subject string, content string, to string, attachments ...string) error
	SendPlainMessages(subject string, content string, to []string, attachments ...string) error
	SendHtmlMessage(subject string, content string, to string, attachments ...string) error
	SendHtmlMessages(subject string, content string, to []string, attachments ...string) error
}