Yahoo Mail is a popular email service from the house ... Google is also far more configurable with other apps like Google ...

Yahoo Mail, on the other hand ... and Yahoo Finance -- each of which has its own app. And, judging by App Store reviews, it's also popular among some of Yahoo's more dedicated commenters.

With the new Account Key feature, users of the Yahoo Mail app are no longer required to type in their passwords. Online privacy champion Alex Stamos is making it a ...