Google's Feedback-ID Header

Since we're talking about Google? Does MW pass " Cache-Control: no-cache, max-age=0" on tracking images since the accessing Gmail through the web and mobile interfaces caches the images?
 

twisted1919

Administrator
Staff member
@Mxyzptlk FishStix - Google caches all images, regardless from where you access them and regardless of headers. It's been a long discussion about this at that time, but for now we are all fine with the way gmail works.
 
https://blog.movableink.com/real-time-content-and-re-open-tracking-return-to-gmail/

2dce9sg.jpg
 

twisted1919

Administrator
Staff member
As the images are served directly from the server(don't go through PHP), you can as well .htaccess them with right expiration.
 

Brett

New Member
Did the Feedback-ID get added? I tried to add a custom header for it but the colons get stripped out so can't use it

Header Tag / Value
Feedback-ID / [CAMPAIGN_UID]:[SUBSCRIBER_UID]:notify:mymta
 

twisted1919

Administrator
Staff member
@Brett - yes feedback id header is added but since that version of mailwizz containing it hasn't been released yet, you'll have to wait a bit more.
 
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