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Gmail HTML Email - Embed Images

HTML mail with an embedded image in gmail - with the next email body - just spills out the exact text. It does not show what's inside the body tags.

This is the contents of the mail:

Content-Type: multipart/related; boundary="bananarepublic12345" This is a multipart message in MIME format. --banana12345republic Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>testing embedded image</title> </head> <body bgcolor="#000"> <h1> Testing Embedded Image</h1> <img src="cid:mambo" alt="ALTERNATE TEXT" > </body> </html> --bananarepublic12345 Content-Type: image/jpeg; name=big-image1.jpg Content-Transfer-Encoding: base64 Content-ID: <mambo> Content-Disposition: inline; filename="big-image1.jpg" /9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQ...//2Q%3D%3D

Where am I going wrong ?

Thanks for any suggestion!

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1 answer

I followed the following instructions 4018709 and it worked well. To summarize, you need the content identifiers for the attachment, which must be formatted as message identifiers (which, in turn, are formatted as email addresses using @ and the domain) and have the content identifier in the header of the MIME part of the image enclosed in angle brackets (for example, you already do).

So, an example email might look like this:

 Date: Fri, 2 Dec 2011 06:57:55 GMT Message-Id: < 201112020657.pB26vttQ010231@geek.co.il > Content-Type: multipart/related; boundary="=-blabla"; type="multipart/alternative" From: Some sender < some-sender@geek.co.il > To: Me < me@geek.co.il > Subject: HTML content with embedded images MIME-Version: 1.0 --=-blabla Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable <html><body> <h1>Header</h1> <h2><a href=3D"http://geek.co.il">link</a></h2> <p> <img border=3D"0" = src=3D"cid: some.random.id@geek.co.il "/> <p> </body></html> --=-blabla Content-ID: < some.random.id@geek.co.il > Content-Disposition: inline; filename="image.png" Content-Type: image/png; name="image.png" Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAA9YAAAE2CAMAAACz7PorAAADAFBMVEUAAAC9...
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Source: https://habr.com/ru/post/896544/

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