The attachment filtering functionality is not applied to outgoing email messages.
Malicious applications can be distributed in the form of attachments in email messages. You can configure filtering based on the type of message attachments so that files of the specified types are automatically renamed or deleted. By renaming an attachment of a certain type, Kaspersky Endpoint Security can protect your computer against automatic execution of a malicious application.
To configure filtering of attachments:
In the lower part of the main application window, click the button.
In the application settings window, select Protection → Essential Threat Protection → Mail Threat Protection.
Click the Advanced settings button.
In the Attachment filter section, do one of the following:
If you do not want the Mail Threat Protection component to filter message attachments, select the Disable filtering option.
If you want the Mail Threat Protection component to rename message attachments of the specified types, select the Rename attachments of selected types option.
If you want the Mail Threat Protection component to delete message attachments of the specified file types, select the Delete attachments of selected types option.
If you selected the Rename attachments of selected types option or the Delete attachments of selected types option during the previous step, select the check boxes opposite the relevant types of files.