email.go
func (m *Message) Tolist() []string {
	tolist := m.To

	for _, cc := range m.Cc {
		tolist = append(tolist, cc)
	}

	for _, bcc := range m.Bcc {
		tolist = append(tolist, bcc)
	}

	return tolist
}
func (m *Message) Tolist() []string {
	tolist := m.To

	for _, cc := range m.Cc {
		tolist = append(tolist, cc)
	}

	for _, bcc := range m.Bcc {
		tolist = append(tolist, bcc)
	}

	return tolist
}
// Tolist returns all the recipients of the email