You can send messages from the "Thank You Message Screen" based on the delivery results.
Notes:
・You can segment by conditions and send different messages, but once sent, they cannot be "resent."
・Messages can be sent to all recipients, to those who have received gifts, or to supporters with badges.
・It is possible to attach images and other files to the messages, but please be aware that they will not be shown to "minors."
Please check here for more details.