
You’ll be prompted to specify the CSV file you want to import. There you’ll find the Import and Export wizard. To make use of Outlook’s Import feature, Select the File tab and go to the Open & Export section.

The distribution list that you want to import should come as either an Outlook Data File(ODT) or a Comma Separated Values (CSV) file. You shouldn’t have to start recreating it from scratch. Sometimes, you could have an already existing distribution list that you would like to make use of in Outlook.

With it, you can send one message to multiple people all at once. Having a distribution list in Outlook is very important.
