Email filtering is a process used to manage incoming emails by automatically sorting them based on specific criteria. This can include identifying spam, categorizing messages by sender, or prioritizing important emails. Filters can be set up to move unwanted emails to a separate folder, making it easier for users to focus on relevant messages. Many email services, such as Gmail and Outlook, offer built-in filtering options. Users can create custom rules to sort emails based on keywords, sender addresses, or other attributes. This helps streamline communication and reduces the clutter in the inbox, enhancing overall productivity.