If you’re not gathering email data from your website visitors (legally) and following up with consistent & periodic email blasts, then you’re throwing the money you spent on your website and business down the drain.
An email subscription service should be a staple of any blogger’s content plan to attract blog traffic and create a transparent reader relationship.
…
Use a signup form on your blog to kickstart the email subscription process.
Source: Why all bloggers should offer an email subscription – The Garage