Enable Email Subscription with Feedburner for your site

There are some ways to subscribe a blog to its visitors inbox. It is a central part to setup at least one email pushing service for your blog to announce about your new posts to your subscribers.

This will help readers to maintain update with your content.

RSS is not the only push-delivery method out there: email subscription is a different great service to offer to your visitors. First you’ll need an email subscription service that’ll send out the emails for you.

Setup a Feed burner feed if you don’t have one already. Then follow these 

steps:     

•    Go to Feedburner.com and login, 
•    Click “My Feeds” in the upper-left-hand corner, 
•    Select your feed from the list, 
•    Click the “Publicize” tab, 
•    Click “Email Subscriptions” on the left, Make sure “Feed burner” is selected, and
•    click “Activate”, Copy the HTML code in the box.

This Configuration steps to WordPress blog.
Now Login to your WordPress blog’s administration area, 

•      Go to the “Appearance” section
•     If you’re using Widgets in your sidebar,
•     Click the “Widgets” sub-tab. Add a “Text” widget to the sidebar you want, and paste the HTML code in the configuration section.
•     Save your changes, and that’s it! If you’re not using widgets, you’ll need to have basic knowledge of HTML.
•     Now Click the “Editor” or “Theme Editor” sub panel, and select “Sidebar” from the list.
•     Usually sidebar modules go between <li></li> tags; some other themes use <div>. Paste the code in your sidebar between the appropriate set of tags in the location you want,
•     click Save, and you’re done!