Ways through which Mail comes into an Organisation

Open Registry:

Most government and large organisations normally maintain their correspondenceA correspondence is a document coming into or going out of an office. Correspondence can also be defined as mails or letters sent and received, in and out of an organisation. More, and relevant correspondence books, in the open registry. 

It is this office that receives and dispatches all correspondence meant for the organisation. From this office, documents received are sorted, registered, and then placed in appropriate files before ...