What is a spam filter tool that helps in automatically removing spam and phishing emails?

A spam filter tool is specifically designed to identify and manage unwanted email, including spam and phishing attempts. SPAMfighter is a well-known software that utilizes various algorithms and rules to automatically detect and filter out these unwanted emails, helping users maintain a clean inbox and protect themselves from potential phishing threats.

The other options do not serve the function of a spam filter. Gpg4win is primarily focused on data encryption and secure communication. Ekran System and ObserveIT are both related to user activity monitoring and threat detection within organizational network environments. They do not facilitate the specific task of filtering email spam or phishing. Therefore, SPAMfighter stands out as the appropriate choice for automatically removing spam and phishing emails.