>From other threads in this and other groups / sites, it seems that
attachment.setContent() does not work properly. What might work is using a
DataHandler:
MimeBodyPart attachment = new MimeBodyPart();
attachment.setFileName("whatever");
//attachment.setDisposition(Part.ATTACHMENT); // Is this needed,
and does it work?
DataSource dataSource = new ByteArrayDataSource(bytesFromSomewhere,
"application/pdf");
attachment.setDataHandler(new DataHandler(dataSource));
mp.addBodyPart(attachment);
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