1. Open Outlook 2010 and click File > Options.

  2. 38438.a-Step1 

  3. When the Outlook Options window opens, click Advanced. In the right pane, click the Export button.

  4. 38438.a-Step2 

  5. In the Import and Export Wizard, select the Export to a file option, then click Next.

  6. 38438.a-Step3 

  7. Under Create a file of type:, select the Comma Separated Values (Windows) option to create a CSV file.

  8. 38438.a-Step4 

  9. Under Select folder to export from:, select the Contacts folder you would like to export, then click Next to continue.

  10. 38438.a-Step5 

  11. Under Save exported file as, click Browse to select a destination folder.

  12. 38438.a-Step6 

  13. In the File name: box, type a descriptive name for your contacts file, then click OK.

  14. 38438.a-Step7 

  15. Click Next.

  16. 38438.a-Step8 

  17. Complete the process by clicking Finish.

  18. 38438.a-Step9 

You have now exported your Contacts to a file that will allow you to migrate your Address Book into another email client.