Although you may not have a large list of donors right now, trying to maintain a spreadsheet of names and relevant information has probably become unmanageable.
eTapestry is a web-based donor solution that is also affordable for smaller organizations. It’s ideal for orgs that have remote employees, a few thousand records, and who need to manage their email newsletters.
Different packages are available based on the organization’s needs. Your spreadsheets (or index cards!) may work for a little while yet but start researching online solutions and consider eTapestry in your evaluation process.