Here's how to import your target audience from a Twitter list directly into Inbox.
Go to the Leads Section
Head over to the Leads section of your Inbox App.
Create a New List
Click on the option to create a new list and give it a name that describes your target audience.
Choose the Import Option
After creating the list, you'll see a few different import options. Click on Import List Members if you want to bring in the members of a Twitter list, or choose Import List Followers if you want to bring in that list’s followers.
Paste the Twitter List Link
Once you select the import option, you'll be prompted to paste in the URL of the Twitter list you want to import from.
Load and Review
The app will then load all the users from that list. You'll have a chance to review them, remove any you don’t need, or add more people if you like.