When does the 'Enable Email Header Filter' feature get activated?

The 'Enable Email Header Filter' feature is activated when the setting for 'Remove English Email Signatures and Footers' is set to 'No'. This means that if email signatures and footers are retained in the data being analyzed, the Email Header Filter can be applied to manage how these elements are handled during the processing of email data. This activation allows for a more refined analysis of emails, as headers contain vital metadata that can provide insights into the communication context.

In contrast, if 'Remove English Email Signatures and Footers' is set to 'Yes', it implies that such elements will be stripped from the emails, potentially removing important context that the Email Header Filter utilizes. The options suggesting the feature is always activated or reliant on the 'Optimize Training Set' setting do not accurately reflect the conditional nature of the Email Header Filter's activation tied specifically to the handling of signatures and footers.