func (p MailBuilder) From(name, addr string) MailBuilder {
	p.from = mail.Address{Name: name, Address: addr}
	return p
}
func (p MailBuilder) From(name, addr string) MailBuilder {
	p.from = mail.Address{Name: name, Address: addr}
	return p
}
func ( p MailBuilder ) From ( name , addr string ) MailBuilder { p . from = mail . Address { Name : name , Address : addr } return p }
// From returns a copy of MailBuilder with the specified From header.
From returns a copy of MailBuilder with the specified From header .