Newsletter is a shortened form of newspaper and informational letter which is generally used to describe a periodic publication distributed to an opt-in list of subscribers. Newsletters are normally used by organizations to communicate their readers about the organization and its activities. The purpose of a newsletter is to provide highly specialized information to a highly targeted audience.

This publication is sent out at different periods of time as per the set frequency. The theme varies in every publication and it depends on the organization what aspects are to highlight for its readers.

A newsletter can be published fortnightly, monthly, quarterly or yearly, where as advertisements or other promotional materials can be published in it.