You are probably spending too much money on paper mail-outs (stamps, envelopes, printing, etc.) that never gets read. Why not try sending information in some new ways where your members are more likely to read it? (And save you a lot of money in the process!)
Flocknote not only handles all of your email newsletters and text messaging, but it does it in a way that your members will read it. Even better, your members can respond and get more involved in what you offer as an organization. It is this increased participation that ultimately leads your members to give more (monetarily and otherwise).