To answer this question, you first need to answer two other questions: how does your newsletter fit into your larger communications strategy and who is the audience for your newsletter?

If, for example, you want your newsletter to help you raise money, you should be writing your newsletter specifically for your donors. All of the articles in your newsletter should provide benefits or interesting information to your donors, remind them how important they are to you, and encourage them to continue to support your work.

If your newsletter is a volunteer recruitment and appreciation tool, then the articles should all be oriented toward your volunteers: how to be a great volunteer, volunteer profiles, how important volunteers are, etc.

Know what you want your newsletter to do for you and who you are writing it for and the focus of the articles will become much more clear.