Using additional features affecting the spam rate
The result of spam rate calculation can be affected by additional message characteristics, for example, a missing recipient’s address in the “To” field or a very long message subject (over 250 characters). When present in a message, such signs increase the probability of its being spam. Consequently, the spam rate will grow. You can select the additional signs that will be taken into account during message analysis.
To use additional signs increasing the spam rate, perform the following steps: