What is a trigger message? SMS verification code and SMS coupon belong to trigger SMS, right?

Trigger SMS, also called trigger SMS, is mainly used to realize quick response to trigger demand, such as sending alarm information, verification code, mobile coupons, etc. Some SMS platforms have good quality, reaching the second level, that is, a few seconds of response, which can be used as trigger applications; Suda Mobile also has special trigger messages, such as S05GK, which only supports interface submission and content templates need to be filed, which ensure the stability of the secondary platform.