Segmenting your list simply means dividing it into sub groups such as people who opened, people who didn’t open, people who clicked, etc.
To get the list of segmented contacts:
Click Contacts and then Segmentation
Now you can choose the parameters for your segment.
Step 1: Choose a list to segment
Step 2: Choose if the contacts must match ANY or ALL of the conditions you specify.
Step 3: Select your conditions such as people who open any email or a specific email in the last 7 days, last month, last 3 months, or last 6 months. You also have the option to create a custom field.
Step 4: Save your segment to a new list or save to an existing list. You can also save this search query to use it at a different time.
Step 5: When ready, click Create.