Learn how to write effective donation letters that boost your nonprofit's fundraising efforts. Learn how to write a donation letter that encourages donors to give.This post includes sample donation request letters and a template. Donors need to be appreciated too. If you want some guidance, check out our donor thank you letter templates for any organization! Sample Letters, Emails, and Social Media Posts. In this post, we cover how to write a donation letter and which key components to include. Plus, we'll share a few examples and templates for writing your own. A letter accompanying a donation to a good cause expresses pleasure in giving the donation and describes any details regarding use of the donation. Download a PDF donation form to mail with your gift.