We can no longer offer Postini spam testing, as our Postini services have been migrated to the ‘Google Apps’ filter. Google purchased Postini in 2007, and stopped renewing contracts for Postini in 2012.
Now most companies that used Postini are transitioning to Google Apps or one of the alternative spam filters. Learn more about it here.
Postini is a cloud-computing service provided by Google for filtering email spam and malware before it is delivered to a client’s mail server. Analyzing Postini headers can give you a lot of information about why an email was flagged as spam or not. I know what you’re thinking: that sounds pretty confusing. It’s actually not as bad as it might seem. This blog is the first in a series which will take you through it step by step.