New in GP 2015 R2 – Enable Email Functionality On All Sales and Purchasing Document Formats
Microsoft Dynamics GP 2015 R2 New Features – Enable Email Functionality On All Sales and Purchasing Document Formats – Microsoft Dynamics GP Community
Tips & Hidden FeaturesSales, Purchasing & InventoryMicrosoft & the GP EcosystemGP 2015
Archived post from 2015. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.