func (m *Message) AttachReader(name string, r io.Reader, settings ...FileSetting) {
	m.attachments = m.appendFile(m.attachments, fileFromReader(name, r), settings)
}
func (m *Message) AttachReader(name string, r io.Reader, settings ...FileSetting) {
	m.attachments = m.appendFile(m.attachments, fileFromReader(name, r), settings)
}
func ( m * Message ) AttachReader ( name string , r io . Reader , settings ... FileSetting ) { m . attachments = m . appendFile ( m . attachments , fileFromReader ( name , r ) , settings ) }
// AttachReader attaches a file using an io.Reader
AttachReader attaches a file using an io . Reader