By default when users subscribe for newsletters they are not required to confirm their email address. This tutorial will show you how to activate the email confirmation feature for newsletter signups.
1. Click on the Settings tab.
2. Click on Store Configurations menu item.
3. Click on Add configuration button.
4. Click on the Newsletter Signups link.
5. Select the site where this feature will become active.
6. Checkmark to activate the confirmation email for newsletter signups.