mail

type Message interface {
	From() *mail.Address
	ReplyTo() *mail.Address
	To() []*mail.Address
	Cc() []*mail.Address
	Bcc() []*mail.Address
	Subject() string
	Text() string
	HTML() string
}

type SendGridOptions interface {
	APIKey() string
}

type SendGridSender interface {
	Init(SendGridOptions)
	Send(Message) error
}