Is there any product/tool that performs the same task than NotesMinder but in the Web (without notes, just http)?
Subject: Web Notifier
You can rather easily create such tool by yourself. Just make auto-refresh on webpage every minute and perform a @dbColumn to your Inbox. Compare nr of mails returned by previous @dbcolumn with nr returned by current @dbcolumn and show messagebox (alert function in Javascript) if number increased.