Segments are an easy way for real estate agents to drag 'n drop leads into lists defined by what sales stage they are in (ie., New Lead, Referral, Friends n Family, etc). Within these lists, you can define how many days you want to stay in contact or reach out to them.
Sending a  Mass Email Blast from inside Segments is the ability to send a high volume of hundreds and thousands of "personalized" outbound email messages to your Leads within a specific Segment List (the number is based on the subscription plan that you've subscribed to) in a few simple clicks.

Send a Mass Email From Inside Segments
Click on Segments.         
Select the specific  Leads or click on the  "Select All" check box based on the list that you want to send your email to.

Click on the  Send Email Mass Action icon to open the email manager.  

Either select an  Email Template or start typing in your subject and email message.

Select any fields that you want to merge into the email from the  Select Column dropdown pick list. The  Field Merge feature will automatically insert specific  Lead Record information like First Name into each individual email so that the emails appear personalized.

Click  Send.