A newsletter is a regularly distributed publication generally about one main topic that is of interest to its demographic. Additionally, newsletters delivered electronically via email have gained rapid acceptance for the same reasons email in general has gained popularity over printed correspondence. Many newsletters are published by companies, to provide information of interest to their members, customers or employees. Sending newsletters to customers and prospects is a common marketing strategy. General attributes of newsletters include news and upcoming events of the related organization, as well as contact information. A good newsletter campaign can be a great way to keep in touch.