Every organization has the ongoing task of retaining donors, those who have stuck by you through thick and thin, those who have a real belief in what you do – those who want to see you succeed – these donors are part of your team and need to be retained.
But retention is only part of the challenge of ongoing support for an organization, you need new blood, you need to have a donor acquisition programme.
This article on Achieve Guidance has some great points and is well worth a read Time to Join the Donor Revolution.