Systems and methods for building personalized messages to one or more recipients. In one aspect, one or more personalized messages are created from one or more templates and one or more token lists. The templates include global tokens and local tokens. The token lists contain fields in the templates and corresponding token values. For each respective target recipient, a personalized message is generated by identifying and storing global tokens and corresponding global token values in a global cache, and identifying and storing local tokens and corresponding local token values in a local cache. The personalized messages are then created using the templates and substituting tokens with token values stored in the global and local cache. The personalized messages are then distributed to the corresponding target recipients.