Which of the following facilities is very useful to an organization that posts a large number of mails regularly?

A franking machine is a facility that is very useful to an organization that posts a large number of mails regularly. This machine is used to print postage stamps directly onto envelopes or labels, which saves time and reduces costs. It is especially useful for businesses that send out a large volume of mail, as it eliminates the need to manually apply postage stamps to each envelope. By using a franking machine, organizations can benefit from reduced postage costs and improved efficiency in their mailing processes.