Ufuoma Ogaga February 27, 2019 App Reviews & Tips, Nonprofit Accounting Bulk Mail Thank Your Letters Using DocuSend App Ufuoma Ogaga February 27, 2019 App Reviews & Tips, Nonprofit Accounting Find out how to save money on printing and postage costs using DocuSend mailing solution integrated with QuickBooks Online to mail out branded giving statements, invoices and campaign letters for your nonprofit.