Triggers for Spam Filters
Contrary to popular belief among marketers, message content is not a major cause of deliverability challenges for most email marketers. This finding is a result of testing the content of more than 1,705 unique emails, using EmailAdvisor’s content scoring tool. The content scoring function is based on the content scoring rules of the widely adopted Spam Assassin open source project. The emails tested had an average content point score of 1.04 well below the filter’s generally accepted spam identification level of 3.0 or higher.
The two frequently triggered Spam Assassin rules that generated content filter point scores of significance were:
* Heavy use of images, which can increase spam scores up to a full point and render poorly in email clients with image blocking enabled
* Sending messages with a “From Name” composed of numbers or symbols rather than an actual name. [Read more]
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Filed under: Web Marketing