I need to use cid embedded images, I'm using the following methods in java:
MimeBodyPart messageBodyPart = new MimeBodyPart();
byte[] imageDataBytes = Base64.getDecoder().decode(imageDataString);
DataSource ds = new ByteArrayDataSource(imageDataBytes, "image/jpeg");
messageBodyPart.setDataHandler(new DataHandler(ds));
messageBodyPart.setContentID("<testImage>");
messageBodyPart.setFileName("testImage.jpeg");
messageBodyPart.setHeader("Content-Transfer-Encoding","base64");
messageBodyPart.setHeader("X-Attachment-Id","testImage");
messageBodyPart.setHeader("Content-Type","image/jpeg");
messageBodyPart.setDisposition(MimeBodyPart.INLINE);
emailBodyAndAttachments.addBodyPart(messageBodyPart);
it looks good in gmail, just like but in outlook and mac email client I see the image as an attached image:
outlook
Is there a header that will make it not appear as an attachment?
There must be one because when I drag and drop images into gmail email, they appear without the attachment part and they also use cid.
That's how it looks when I send it from gmail and that's what I also want:
outlook
These are the headers that gmail uses:
--0000000000004076a905f77e39cf
Content-Type: image/jpeg; name="pexels-lisa-fotios-1540258.jpg"
Content-Disposition: inline; filename="pexels-lisa-fotios-1540258.jpg"
Content-Transfer-Encoding: base64
Content-ID: <ii_lfjsr1aq0>
X-Attachment-Id: ii_lfjsr1aq0
/9j/4AAQSkZJRgABAQ..........
and these are the headers that I attached:
--_004_CAMNVZSzi1kPoPE3OoJQKBpjw6iFoN2GooxXSKEYAh4pafw4Sgmailg_
Content-Type: image/jpeg; name="testImage.jpeg"
Content-Description: testImage.jpeg
Content-Disposition: attachment; filename="testImage.jpeg"; size=3716152;
creation-date="Thu, 23 Mar 2023 10:18:53 GMT";
modification-date="Thu, 23 Mar 2023 10:19:19 GMT"
Content-ID: <testImage>
Content-Transfer-Encoding: base64
X-Attachment-Id: testImage
The image is referenced as cid in the HTML of course: 