The Northern Berkshire Community Coalition has been around for more than 20 years. Most of the copies are sent through email, which eliminates the cost (and effort) involved in preparing and mailing paper copies. In addition to other resources, you will see that the newsletters include photos, calendar events, and listings of people—work group members, staff, members of the board of directors, donors (along with appeals for donations), legislators—and of organizations, including agencies, churches, media outlets, and so on.
The Cleghorn Neighborhood Center, which serves a neighborhood of residents, sticks to hard copies because its newsletter can be distributed by hand at local sites. The newsletter, run off in color, includes many photos of local residents. The focus is on engaging the low-income Latino community surrounding the center, so the material is in both English and Spanish.
Holyoke Unites/Holyoke Se Une created a beautiful email-only format that they used for announcement of coming meetings and updates.