Gmail image caching update

Late last year Gmail started caching images on their servers, breaking open tracking in some circumstances. This image caching was good for senders, in that images were back on by default. But it was also bad for senders because it broke dynamic content and didn’t allow for tracking of multiple opens by the same recipient.
According to a new blog post by Moveable Ink this issue has now been resolved and Google is respecting cache headers so senders who are using dynamic content or want to track multiple opens can do so.

Last week, the Movable Ink team noticed that Gmail had begun deploying updates to address the issues caused by its 24-hour caching. The cache still exists, but it is now overridable if you pass a no-cache header (example below).

HTTP 200 OK
Content-Type: image/png
Cache-Control: no-cache max-age=0
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Gmail pilots new FBL

Yes, it’s true. Gmail announced last Thursday at M3AAWG that they were piloting a new Feedback loop.
The Gmail FBL is currently for ESPs only. The announcement during MAAWG was that only MAAWG ESP members were eligible. They are requiring a DKIM signature for the FBL, but ESPs using individual customer d= values can get a FBL based on IPs. They are also not providing ANY information that reveals the complainer. Gmail’s intention is only to give ESPs feedback so that ESPs can prevent abuse. They are not giving feedback so complainers can be removed.
The email has a .csv attachment that has 3 columns: date, identifier and complaint rate.
The identifier is an ESP provided customer identifier. One of the ESPs I talked to said they were adding an X-header into their emails.
I’ve heard from beta testers that there is a minimum of 100 complaints before you’ll get any report.
Reports are sent daily if there is sufficient traffic to trigger them.
If you’re a MAAWG member, check the senders list for the signup URL.

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Do Gmail tabs hurt email marketing?

Earlier this year, Gmail rolled out a new way for users to organize their inbox: tabs. Tabs were an attempt by Gmail to help Gmail users organize their mail, particularly programmatically generated email like social media alerts and marketing mail. While many of us took a wait and see approach, a number of email marketers took this as one of the 7 signs of the apocalypse and the end of email marketing as we know it.
Dozens of marketers wrote article with such titles as “7 ways to survive Gmail tabs” and headlines that declared “Thanks to Gmail’s new tabs, promotional e-mails are now shunted off to a secondary inbox. If you rely on e-mail marketing, you should be worried.” Marketers large and small responded by sending emails to recipients begging them to move marketing mail out of the promotions tab and into the inbox.
A number of bloggers, reporters and marketers, myself included, tried to tame the panic. Not because we necessarily supported tabs, but because we really had no insight into how this would affect recipients interacting with email.
This week Return Path published a whitepaper on the effect of Gmail tabs on email marketing (.pdf link).
Not only did Return Path’s research show little negative effect of tabs, they actually saw some positive effects of tabs on how recipients interact with commercial email. Overall, the introduction of tabs in the gmail interface may be a improvement for email marketers.

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More info about Gmail image caching

A lot of people are discussing the new Gmail image caching around the web.
This doesn’t yet appear to be rolled out across all of Google’s network, so some people in different parts of the world are reporting different behaviors. This is leading to a little bit of confusion, as folks are reporting things like seeing multiple opens for a single image. These reports are clearly accurate, but may only be an artifact of a slow rollout across the network.
There are a couple bullet points I think are important.

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