Do we have to manually add recipients in email reminders?

With the new email reminders feature, I just wanted to confirm that I have to manually add applicants who use my form to the 'To' field correct?

The end goal is to send reminders to those who have not completed my form yet.

Any help is appreciated. Thanks!

Yes that is correct. You need to add the email address of user and then schedule the email to be sent. 

You may like to take a look at the following guide which should help you on how reminder email feature works: https://www.jotform.com/help/541-How-to-Set-Reminder-Emails-for-Your-Forms

Hope this helps.

Do get back to us if you have any questions.