Mailbox Digger is an email notifier that allows you to view and manage email in multiple email accounts. It notifies you of new messages by sound and/or system tray notification. You can read messages, reply to them, delete them and also compose new messages. The program supports POP3 accounts and sending via SMTP or your default email client. Other features include support for POP3 and SMTP connection encryption (TLS/SSL), secure password authentication, message saving, HTML mail support and more. Mailbox Digger is portable and can be optionally installed to a USB drive.