แปลง EML เป็น TEXT ใน Andorid Apps

// load the EML file to be converted
MailMessage message = MailMessage.load("sourceFile.eml"); 
// save EML as a HTML 
message.save("HtmlOutput.html", SaveOptions.getDefaultHtml());
// load HTML with an instance of Document
Document document = new Document("HtmlOutput.html");
// call save method while passing SaveFormat.TEXT
document.save("output.text", SaveFormat.TEXT);