Blackening will show that sending failed?

In general, the drop-down black will definitely show that the transmission failed.

After the other party blacklists himself, he sends a text message to the other party, and the other party will not receive it. SMS content is automatically blacklisted by the system, and SMS reminder is no longer available.

You can't see it unless the other party cancels the black screen or blacklists the mailbox.

Extended data

In the optimization of network SEO, we can use the list of search engine spammers collected by search engines or voluntary users to prohibit these spammers from entering search engines or boycott them.

The word blacklist comes from world-renowned universities such as Oxford and Cambridge in Britain. In the early Middle Ages, these schools stipulated that the names and behaviors of students who committed bad behaviors should be recorded in black books.

If the name is on the black book, it will make people lose their reputation for quite a while, even if it is not notorious for life. Students are very afraid of this regulation of the school, and they often take care to prevent deviant behavior.

Small information capacity

Short message platform is relatively boring because it can only edit text and lacks corresponding picture materials, and short message advertisements are rampant, so the reading rate is not necessarily too high. The sending cost of MMS is too high.

Terminal data is difficult to collect.

SMS platform needs corresponding numbers to send, and how to collect these numbers and how to send them to those customers after collection has become a very important issue, so the customer coverage of SMS platform is not necessarily comprehensive.