We are running Sitecore 8.2 and EXM 3.4 on it.

I just noticed that If I open the email in the web G-Mail client, all image urls are being replaced by google with some proxy.

For example the initial html for pixels that we send look like this:

in G-Mail they all start with https://ci5.googleusercontent.com/proxy/

enter image description here

And it appears that first one - email open pixel with G-Mail proxy'ed url returns 404 by some reason - so in the mailbox I see next picture: enter image description here

Which also can affect the open email stats in the backend... Is there anything we can do about it? Is it a known issue?

  • This is not an EXM issue, Google has been proxying images for a long time now. See here, here or here
    – jammykam
    Nov 26, 2018 at 14:40

1 Answer 1


As mentioned, this isn't an EXM issue.

Google has provided an image cacher proxy for emails. The pixel doesn't return a proper image which makes Google think it's broken, but the fact the request was made means that you capture the open still.

It's been a while since I looked at 3.4, but I confirm in Sitecore 9.0.1+ that EXM Open Pixels work just fine in Gmail.

I will agree with you though that it looks weird in Gmail.

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