Yahoo’s Jeff Bonforte writes on the Yahoo Mail blog, When we launched the new version of Mail in October, we removed Tabs. One of the things you told us that annoyed you about tabs is that the more you had open, the harder they were to manage, and you wanted multitasking to be easy. With your feedback, we launched Recent view to help you jump between emails, drafts and search results more easily, but many of you still missed tabs. So we’re bringing back tabs, but this time, they’re a bit smarter.
To turn on the new Tabs, go to View, Multitasking and select Tabs. Emails you want to read, emails you are composing, Calendar and Contacts all appear as individual tabs. If you use the preview pane, double-clicking an email will open it in a tab.
Sometimes when you have a lot of tabs open, it’s hard to find the one you want. We’ve fixed that. In the tabs menu (under the arrows icon after the last tab) you will see an option to Preview All
