Here is the Good news for Yahoo lovers, who primarily use yahoo mail services. Yahoo has added a new element to its Mail application that allows users to add / integrate their Gmail account into the webmail. This element also allow users to add Hotmail, Outlook and AOL email into the same webmail service.
Steps to add email in Yahoo:
1. Hover the Gear Box on Right side of your computer and select settings.
2. Select “Accounts”
3. Click on Add another MailbBox
4. Here, you can add your email that you want to integrate and after some time you can see a new inbox for your newly added account below the yahoo inbox.
5. Then, Yahoo will take some time to synchronize email. After that, you can see your emails from other services providers in your yahoo mail service.
I have tried up by Adding two Gmail Accounts. But no further information is available how many can we add. You can try at your level.