Marketo support has confirmed that the view source option no longer works due a change in the latest release with regards to the mkt-tok, and the fact that it no longer sticks in the url of the page when viewing an email as a web page.
The mkt_tok is still there, but it doesn't stay in the url path of the browser anymore. You can spot it for a split second and then it's gone. This is what support mentioned about this change: "... we confirmed with engineering that this is due to the release and a byproduct of an intended and necessary change for security reasons. The removal of the mkt_tok, was so that the end user "cannot bookmark, forward, or let search engine cache it" according to engineering. Since that value can be used for cookie-ing with Munchkin, it was theoretically possible for the URL to get indexed on a search engine. Meaning anyone who clicked the link would get cookied as that person."
They also confirmed that the approach going forward of getting to the code through a browser would be to save it as a file - view source will not work anymore because of the "missing" token. They did however provide another workaround to mimic the view source code approach I used before, and it works, although requires a bit of cutting and pasting:
- Send yourself a test email with the "view as web page" link included.
- In the email, right-click this url and copy it.
- In the browser, paste "view-source:your-copied-url-from-the-email" into the path.
- On that page you will see the complete url with the actual token - copy the entire url.
- In the browser, paste "view-source:the-entire-token-url" into the path.
- There's the code.
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