Seems to be related to [this question](http://meta.stackexchange.com/q/108177/205508), but I see that it's from 2011, so reporting again.

The images in Stack Overflow notification emails are broken. See the screen shot bellow:

> ![screencap][1]

The link to image is:

> `http://stackoverflow.com//cdn.sstatic.net/stackoverflow/img/icon-48.png`

instead of 

> `http://cdn.sstatic.net/stackoverflow/img/icon-48.png`

My email client is Yahoo!. I forwarded the email to a gMail address and the image is still broken.

  [1]: https://i.sstatic.net/6uKm6.png