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Microsoft Junk Email Filters

Posted on 2.17.2008

Interested in how Microsoft's mail filters work? If you're involved in the creation or delivery of email for your online enterprise you certainly should be. If you'd like to keep your email out of the junkbox and deliverability rates high, there is a list of stop words and phrases available from Microsoft which are broken down into two categories - "junk email" and "adult content filter". Most will be able to guess on those emails which trigger the adult content filter, but the terminology which could relegate your finely crafted email to users junk folders are a little less obvious. See the entire list here; a short list is below. There are more than could be listed quickly so it's worth a look to ensure you are not in violation of Microsoft's email standards and general best practices.

Junk Email Filter Stop Words/Phrases at Microsoft:

- First eight characters of "From" are digits
- Subject contains "advertisement"
- Body contains "money back," "cards accepted," "removal instructions," or "extra income"

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