This diagram explains the steps an email is delivered to a user of email and how that potential SPAM email is stopped before reaching the user’s computer or other device.

Epic SPAM filter

The mail server runs multiple tests on each email to determine the email’s SPAM tendencies. As the email is processed by the tests a running total of tests’ weights  is obtain.  The final weight determines  the action on the email.

Email Weight


Under 40

Delivered to the Inbox


Subject line prefixed with [SPAM?]–>[Weight] |

And Delivered to the Junk E-Mail folder on your account at

Over 100


From time to time the tests, and their weights  are adjusted by technicians to better mark email as SPAM. Adjustments will also be made to the weight categories for actions as shown in the table above.


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