How can I know that the message was intercepted by the other party?

First, test the whole short message. That is to find the mobile phone number of an "acquaintance" and send a prepared text message. If the other party can't get it, you can try words such as "we" and "everyone" that are definitely not sensitive words.

First, test the whole short message. That is to find the mobile phone number of an "acquaintance" and send a prepared text message. If the other party can't get it, you can try words such as "we" and "everyone" that are definitely not sensitive words.

But if you want to send customers in different regions, send the test with the number in this region! Because the sensitive keywords in text messages are different all over the world.

If you don't receive the tests of "We" and "Everyone", it is likely that there is something wrong with sms channel, and you can report it to the customer service in time. For the sensitive words that are not obvious in short messages, we divide the contents of massive short messages into two parts and test them separately to see which part can't be received.

Similarly, the unreceived content is divided into two halves for testing. If you test according to this method, you will soon find those sensitive or blocked keywords.

If some keywords cannot be replaced, they can be replaced by dots or spaces, or integrated replacement. Note that some keywords may not be replaced by dots or spaces, so remember to replace them.

Then a complete test was carried out, which was collected several times. After that, the arrival rate of international SMS groups is basically no problem.