Hello, this is SureM (SuperM).
Today we would like to introduce about SureM (SuperM) Korea Operator SPAM Filtering Service.
When you send traffic to Korea for event or promotional message, occasionally the result is delivered but not received in the handset.
This is because of additional service that is provided by KISA to filter SPAM traffic coming.
Operator are sending the SPAM messages to a filtering app and in this case you can download the corresponding carrier spam filtering app to check the message.
Also, you can modify the corresponding text to allow receive its message.
If you have inquiry, please send email to intlsales@surem.com