The Golden Shield Project, commonly referred to as "The Great Firewall of China", is an initiative by the Chinese government designed to monitor and heavily censor all internet content. While most firewalls offer a protective shield around a corporation, Golden Shield places one around an entire country. Years in the making, the Golden Shield began operation in 2006.
If you are sending email to China, it will be subjected to significantly stricter email filtering than any other country in the world. This could result in email delays, delivered emails with unclickable links, or flat-out non-deliverability.
While there is no guaranteed way to ensure delivery (to anyone for that matter), there are some best practices you can follow that can improve deliverability when sending to China.
There are multiple sites that can give you this information. One we sometimes use is: http://www.blockedinchina.net/. Be sure to check domains and sub-domains (if you use them).
Nothing at all, unfortunately. Listing are often dynamic and will resolve on their own when reputation improves or the content is not flagged.
Being blacklisted is only temporary 99% of the time (length of blacklisting will vary). Our best advice is to follow the above best practice tips.
Countries such as China and Japan are huge players in the mobile market, so be sure to keep mobile best practices in mind when designing emails.
Marketo cares about your success. To stay on top of trends, we monitor and receive reports from CASA (Chinese Anti-Spam Alliance). If you have any additional questions, or if you feel that you're being impacted by the Golden Shield, please contact Marketo Support.