Distributing information through email

Some large organisations have their own email systems. Email is a way of messages or letters from one computer to another by using telephone lines. Staff can write an email message or an email letter to other staff members. Staff can also send email to staff of other organisations. It is another way to distribute information instead of writihg it on paper of speaking to another person.
Small organisations might have email for sending information to other organisations even if they can't send email to other staff at the same organisation. Organisations who have email can also receive information from other organisations.