Yes, this is possible. You can create a joined list of emails in a single column. One approach is:
- Start with the column that will hold all the emails. Let’s call it “Emails”
- Create two template columns
- The first will contain a replacement for the current email to be added to the list
- The second will contain two replacements: The current value of “Emails”, plus the next email to be added, separated by a comma
- Finally create an if-then-else column to determine which template to use to write the new value of “Emails”. Use the first one if “Emails” is empty, otherwise use the second one.
Edit: if you also need to be able to remove emails from the list, check out this tutorial