What is diplomatic mail?

Question

what is it? and how dose it work?

Answer 1

Embassies have the right to communicate with their home country without the communication being intercepted.

A diplomatic bag, also known as a diplomatic pouch, is an envelope, parcel, shipping container or any other kind of receptacle having diplomatic immunity from search or seizure. It need not be an actual bag. They are often transported by diplomatic courier, who are similarly immune from arrest and detention.

Answer 2

Diplomatic mail is new orders which are issued by the government to be given to ambassadors stationed at different country's

Answer 3

One country to other country, diplomat send there  mail that comes so protocol,. This is diplomatic mail. No ordinary person can used this mails.