With the help of this tool, you can obtain daily updates on changes in a site’s positions via email.

Position Tracking is the correct answer because its primary function is to monitor a website's daily keyword rankings and provide updates, including email notifications for significant changes. This tool is specifically designed for tracking SERP positions over time. Advertising Research focuses on competitor ad strategies and budgets, not daily position changes. PPC Keyword Tool helps with building and managing PPC campaigns. Display Advertising analyzes display ad campaigns. Keyword Ads History shows historical ad copy and positions. Keyword Gap identifies missing keywords compared to competitors. None of these other tools offer daily position updates via email.