Configuration
In order to configure both extensions, please go Admin > Configuration > System.
Segmentation Suite

Select Yes to enable the Segmentation Suite module.
Newsletter Booster

Enabledselect Yes to enable the Newsletter Booster module.Number of emails sent per cron iteration- specify the number of emails.Number of queue threads for sent per cron iteration- specify the number of queue threads.Unsubscribe customers from default magento newsletter- select Yes in order to unsubscribe customer from the default magento newsletter.Campaign Test Email Address- specify the email address for testing only.

Show Frontend Subscribe Form- select Yes to allow customers to subscribe directly on the store page.Guest subscribe- select Yes to allow non registered users to subscribe.Send a confirmation email- select Yes to get confirmation email about customer subscription.

Enabled- select Yes to enable the Mandrill App Service.Api Key- enter a key that you have got from Mandrill Api Service.

Verify Email Form- specify the email that will be used for testing. This address will be requested by email server.Magento Customers- select Yes to enable the verification of magento customers emails.Magento Subscribers- select Yes to enable the verification of magento subscribers emails.NewsletterBooster Subscribers- select Yes to enable the verification of Newsletter Booster subscribers emails.