How to attach a file to an HTML email using Apache Commons Email

Note that using:

email.attach(new ByteArrayDataSource(pdfBytes, "application/pdf"),
      "document.pdf", "Document description",
       EmailAttachment.ATTACHMENT);

on a HtmlEmail using commons-email 1.1 causes the resulting email to have its message (text or html) enclosed as an attachment.

Switching to a MultiPartEmail fixed this.

I suggest you try the current release candidate v1.2 RC2 as 1.1 (I guess you use that) has some html layout problems

commons-email 1.2 RC2

email.attach(new ByteArrayDataSource(pdfBytes, "application/pdf"),
      "document.pdf", "Document description",
       EmailAttachment.ATTACHMENT);

this works with commons-email 1.1.

pdfBytes should be a byte[] containing the bytes of the pdf document. If that doesn't suit you, you can try other DataSource implementations, but I can't guarantee they'd work (although they should).

(The one above is org.apache.commons.mail.ByteArrayDataSource)