Search and Wider Mail by Yahoo is a Firefox add-on designed to enhance the functionality of Yahoo Mail. This subscription-based extension allows users to set Yahoo as their default search engine, ensuring a smoother integration between email and web searches. The primary feature of this add-on is its ability to provide a wider view of the inbox, improving visibility and accessibility of emails. Users must reload their Yahoo Mail page after installation to fully utilize the wider interface.

This extension also collects specific information from the user's browser, including the current default search engine, browser version, and operating system version. It is essential to note that the wider mail experience is only available when Yahoo is set as the default search engine. Overall, this add-on aims to enhance the user experience for Yahoo Mail users by streamlining their email and search functionalities.