Copy and paste multiple cells from Excel into HubSpot smart list

HubSpot Ideas
4

Sure, using an email field as an example:
Copy Emails + semicolon field

Screen Shot 2019-10-15 at 5.31.29 PM.png
Screen Shot 2019-10-15 at 5.31.29 PM.png263×153 12.5 KB

Then paste them into the list parameter

Screen Shot 2019-10-15 at 5.32.57 PM.png
Screen Shot 2019-10-15 at 5.32.57 PM.png290×175 18.2 KB

Hope this helps!