# Phone book management

Phone book is used to manage customer's information such as name,birthday,email,address etc. It's recommended that import below 50,000 numbers in phone book. If you just want to import numbers for SMS sending, please go to Compose->To numbers-> Import numbers from file.

Import: app allow you imports contacts list from external excel/txt/csv file.

Export: You may export contacts list to txt/csv file.

Subscribe: It be used temporary mark some contats, when you compose SMS to group which include the contact, app will not send SMS to this contact if the subscribe is unchecked.

Assign to group/Remove from group: High line the records in contact list then right click, you may click menu 'assign to group/remove from group' to make change.