SaneBox is an email management service designed to enhance productivity by reducing time spent on managing less important emails. It uses sophisticated algorithms and machine learning to sort emails based on importance, derived from users' past email interactions like which emails are opened, responded to, and how often. This sorting process helps users focus on critical emails by moving less important ones to a separate folder called @SaneLater, which can be reviewed later. The service also provides a daily digest summarizing these emails.

A standout feature of SaneBox is its simplicity and integration with existing email services, meaning users don't have to switch platforms or learn new software. It operates directly within any email client, be it Gmail, Outlook, or others, adding folders like @SaneLater for less important emails and @SaneNoReplies for emails that haven’t received responses. Users can train SaneBox by simply moving emails to the desired folders, teaching the system their preferences over time.

Security is a significant aspect of SaneBox's service. It doesn't store emails or their attachments on its servers. Instead, it examines email headers using secure and encrypted connections. Physical and network security measures are robust, ensuring user data protection meets high standards, including ISO accreditation for their data centers.

In addition to these core functions, SaneBox offers several convenience features to enhance email management. These include the SaneBlackHole for unsubscribing from unwanted senders permanently, SaneReminders for following up on emails, and the ability to snooze emails until a more convenient time.