If phone's country code is in the block list(DELAY_SEND_SMS_COUNTRY_NUMBER), we will delay send between two same country code sms within DELAY_SEND_SMS_TIMEOUT(Default: 3600s).
If phone's country code is in the block list(DELAY_SEND_SMS_COUNTRY_NUMBER) and last this country code phone didn't register successfully in 24 hours, we will delay send sms.
If phone's country code is in the block list(DELAY_SEND_SMS_COUNTRY_NUMBER), we will delay send between two same country code sms within
DELAY_SEND_SMS_TIMEOUT(Default: 3600s).If phone's country code is in the block list(DELAY_SEND_SMS_COUNTRY_NUMBER) and last this country code phone didn't register successfully in 24 hours, we will delay send sms.