Blogger reveled about its new look of Dashboard and now added a new widget 'Follow by Email'.
This widget is same as feedburner 'Subscribe by Email' widget but this widget has one advantage you don't need to create feedburner account. Blogger will create a feedburner account for you and you just have to do is to add this widget.
For adding this widget go to 'Design' >> 'Add a Gadget' >> and select the 'Follow by Email' and you have done it all
Note : If you are having a feed burner account then blooger will ad a new feed in your account for this widget. If you wanna use the same widget then while adding this widget change the feed name by your old feed.