The Sage 50 MAPI Error 14 The Sage 50 MAPI Error 14 is a common technical issue that affects email communication within Sage 50 accounting software. Sage 50 is widely used by businesses across the United States for bookkeeping, payroll management, invoicing, inventory tracking, tax preparation, and financial reporting. One of the software’s most valuable features is its ability to send invoices, customer statements, payroll reports, and financial documents directly through Microsoft Outlook. However, when communication between Sage and Outlook fails, businesses may experience delays in accounting operations and customer communication.is a common technical issue that affects email communication within Sage 50 accounting software. Sage 50 is widely used by businesses across the United States for bookkeeping, payroll management, invoicing, inventory tracking, tax preparation, and financial reporting. One of the software’s most valuable features is its ability to send invoices, customer statements, payroll reports, and financial documents directly through Microsoft Outlook. However, when communication between Sage and Outlook fails, businesses may experience delays in accounting operations and customer communication.