Participants with multiple emails and sending to primary emails 📬

If you've merged multiple emails into a single participant in Pool, or your participants have multiple email addresses like work and personal, that means you can have more emails than participants in a study invite or pool email distribution. 

Default behavior: all emails included 📤

The default setting in a study invite or pool email is to include all the emails for any participants you select. This ensures that if not all emails work for a given participant, you have the highest chance of them seeing your email.

When to restrict to primary only 🎯

If you only want to include the primary email for participants, and not include any additional emails, turn on the toggle for primary only.

• The benefit of this approach is to not spam an individual person with multiple emails (work, personal, etc)
• The downside of this approach is that you might not reach every inbox, so conversion could be lower for study invites