After registering your KANNA account, you can verify your email address to receive KANNA notifications via email. (Reference page: Notification Settings)
1. Tap the URL provided in the email you received.
An email with the following content will be automatically sent to the email address you registered during account creation.
Click the URL included in the email body.
2. Email Address Verification Complete
After verifying your email address, notifications will be sent to your registered email address.