We've experience this issue in the past, where we upload new versions of jpegs or gifs into design studio and replace them in the email. We approved & sent tests and the correct images were there. However, when the email went out this morning, the old images were in the email. Just to make sure, in design studio I checked the new image and it says that it was used for this mornings email. Can this be fixed?
Go straight to Marketo support with that one. If you have something where the Marketo software itself seems to be misbehaving, they are your best bet for figuring out why. You are correct, the image should have just been replaced.
Are you sure (how are you testing?) that you are not simply seeing a cached image? Mail clients are free to cache images regardless of whether they've been replaced on the server. So if you've sent the email to yourself with the "old" images it's quite possible to see those same images when you resend and read in the same mail client. Obviously across mail clients who have never seen the URL before, there would be no caching in play.
Ok it worked! How do I prevent this from happening in the future? Just keep adding a query string to each image url? This is a random occurrence. Is it possible that something in the url triggered marketo or the server to cache the image?
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