lib/Mailer/MailMessage.js
function Attachment(options) {
    this.fileName = options.fileName;
    this.contents = options.contents;
    this.filePath = options.filePath;
    this.streamSource = options.streamSource;
    this.contentType = options.contentType;
    this.cid = options.cid;
}
function Attachment(options) {
    this.fileName = options.fileName;
    this.contents = options.contents;
    this.filePath = options.filePath;
    this.streamSource = options.streamSource;
    this.contentType = options.contentType;
    this.cid = options.cid;
}
function Attachment ( options ) { this . fileName = options . fileName ; this . contents = options . contents ; this . filePath = options . filePath ; this . streamSource = options . streamSource ; this . contentType = options . contentType ; this . cid = options . cid ; }
Attachment constructor.
Options of nodemailer attachment are available
@constructor
Attachment constructor . Options of nodemailer attachment are available