The idea is quite simple.
Sometimes while sending a MP or a message for your alliance mates, you send it empty or a couple of times with the same text, by mistake.
The idea suggested for Argentinia players is a kind of requirement to avoid this: for instance, you need to write a text in order to be able to send it (avoiding empty messages) or, if you try to send a message with the same text that another one sent before, system advices it to you in order to confirm the message submitting, reducing spam and "unwanted" messages in your inbox.
Sometimes while sending a MP or a message for your alliance mates, you send it empty or a couple of times with the same text, by mistake.
The idea suggested for Argentinia players is a kind of requirement to avoid this: for instance, you need to write a text in order to be able to send it (avoiding empty messages) or, if you try to send a message with the same text that another one sent before, system advices it to you in order to confirm the message submitting, reducing spam and "unwanted" messages in your inbox.