Email Extract can extract phone numbers using 2 methods:
1. Build in algoritm for each country
2. Using Regular expressions.
By default extracting phone numbers is disabled. To enable it open settings tab and click at "Phone" checkbox at "Extract" panel.
Then select your country in dropdown list.
To use "Regular expression" method click at "By Regular expression" checkbox and Enter Regular Expression in "Phone" textbox at "Search Regular Expressions" panel. Default regular expression is for USA.
After that program will start to extract phone numbers.