Feb 19, 2017

Google Image Proxy is a Google service that anonymizes image requests for Gmail. Filippo Valsorda has a good write up here of how the service works. The important take away is that this service proxies any requests for image resources that are meant to be displayed in Gmail. Gmail’s new image proxy feature and quick work-around With the release of Gmail’s Image Proxy feature, Gmail downloads all images inside the email you have sent whenever your email arrives to Gmail servers. Gmail stores them on its own servers and when recipient opens your email, images of your content are served through Gmail’s servers, not from your servers. Now, this is good and bad. How do I bypass the Gmail Image Proxy? – Help Center Users of Google Apps (GSuite) have the ability to whitelist specific domains through their administrator account to bypass the Gmail Image Proxy. Internal Comms. users who are seeing a significant number of opens from the Google Proxy can utilize the methods below to bypass the proxy and receive their proper location metrics.

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Set Up an Image URL Whitelist for Google Apps for Work

Dec 12, 2013

New Gmail image server proxies raise security risks - CNET A new Gmail policy that allows e-mailed image attachments to load automatically comes at a price, say two security researchers. Google announced on Thursday that Gmail would once again load Detect Gmail image proxy as bot and not as normal client I'm using the library to analyse email user agents from loading an image in the email. Gmail image proxy has the user agent string: 'Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko Firefox/11.0 (via ggpht.com GoogleImageProxy)' currently thi Gmail deploys image proxy servers | Word to the Wise Dec 05, 2013