You can send emails to attendees who have registered for signups or to the registration contact, depending on the way you send the email.
Emails will be sent to the primary email address, except in the case of Account settings. Accounts sends an email to every email address listed on an Organization Administrator or Billing Manager's profile.
Registration Contacts are the only people who receive emails from the signup, unless no registration contact is listed. If no one is listed as the contact, emails will go to all attendees with an email address.
Check out this clip from Planning Center University.
From the Registrations tab, click Actions, and then choose the type of email to send.
If you want to email all attendees, regardless of the Registration Contact, you can create a People list of attendees, and send them an email from the list.
This list allows you to send an individual email to every attendee, regardless of the Registration Contact.
From a person's registration, you can choose a type of email to send to the Registration Contact, as well as any listed email addresses, by clicking Email.
If you want the email to go to someone besides the current Registration Contact, you can change the Registration Contact by clicking the Edit button in the Attendees section.
If someone mentions they didn't receive an email, try these things:
If neither of these help, contact support by clicking the ? in the top right corner of the app.
You can see a list of all the emails a person has received through Planning Center from the Communication tab on their profile page.