1. The First step you need to do before you can add Email Subscription’s to your Blog is to create an account in feedburner.
2. After creating your account in feedburner, go to your Dashboard and Select “Publicize” Tab.
3. There in “Publicize” tab, Select “Email Subscriptions” link and now you are at the right place to add Email Subscription box to your Blog.
4. Click on “Activate” to Activate Email Subscription option to your Blog.
4. Now, Select “Blogger” from the drop down box and Click on “Go”.
5. In the upcoming window you can Select your Blog and add “Email Subscription box” as a Widget.
6. Now, It’s possible to the user’s to Subscribe to your Blog by entering their Email address in the Email Subscription box