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Re:Ask HN: Open gmail, see image blocked.... hey wait by songgao on Thursday July 11, 2013 @12:01AM (#6024409)
I guess it's encoded (embedded) in the email body? The src is not pointing to any external resource. I

One of the purpose of blocking images is to prevent tracking by sender. Embedded images won't require a request to sender's server to display so there's no need to block it?

Re:Ask HN: Open gmail, see image blocked.... hey wait by Zarel on Thursday July 11, 2013 @12:27AM (#6024457)
It looks like it's pointing to an attached image. If so, this is perfectly normal.
Re:Ask HN: Open gmail, see image blocked.... hey wait by veesahni on Thursday July 11, 2013 @10:30PM (#6030563)
Emails attachments can be used as inline images. If an attachment is being used as an image, gmail no longer shows it as an attachment.

In the linked email, there were attachments used as images (as shown) and possibly additional image tags which source remote images.

There's no harm in auto-loading inline images. However, remote images can be used for tracking.

Re:Ask HN: Open gmail, see image blocked.... hey wait by bigiain on Thursday July 11, 2013 @12:22AM (#6024447)
It's using a relative url for the image.

There is no image at https://mail.google.com/?ui=2&ik= …

My guess is that the blue shape and text are in the css somewhere.

Re:Ask HN: Open gmail, see image blocked.... hey wait by t0 on Wednesday July 10, 2013 @11:33PM (#6024349)
Are they attachments?
Re:Ask HN: Open gmail, see image blocked.... hey wait by legion050 on Wednesday July 10, 2013 @11:38PM (#6024356)
Inline if so, I have no option to download or retrieve.
Re:Ask HN: Open gmail, see image blocked.... hey wait by eranation on Wednesday July 10, 2013 @11:45PM (#6024378)
I've seen it before, had the same question.
Re:Ask HN: Open gmail, see image blocked.... hey wait by legion050 on Wednesday July 10, 2013 @11:27PM (#6024340)
also, is this common? I haven't seen this until now.