Joke Collection Website - Blessing messages - Why does the system administrator automatically reply to the successful sending of SMS when the mobile phone sends SMS?

Why does the system administrator automatically reply to the successful sending of SMS when the mobile phone sends SMS?

This is a news report.

It means that the other party has received it

If the other party's mobile phone is turned off or there is no signal, it will not be received.

You don't have this news report.

be free of charge

The mobile phone may be provided with or without message reporting.

I often use it.