The API for authentic handwritten notes

Our API v3 is here! Since starting our private beta in December 2015 our API for handwritten messages has been continuously revised. Although v3 is still in beta it is fully functioning for all our standard letters and cards. You find your API key within your pensaki account.

API is the abbreviation for “application programming interface”. Amon other things, an API specifies how software should interact, i.e. communicate among them. Thanks to an API it is possible that one web service (e.g. a CRM solution) triggers an external web service like the Pensaki web application. Therefore an API is a machine-to-machine interface, rather than an user interface.

From the user point of view the primary advantage of an API is that it removes the need to repeat laborious data entry tasks, hereby saving precious time for other mission critical or strategic activities. The user interacts only with one user interface (e.g. CRM solution) and triggers indirectly also an external service for his task (e.g sending handwritten invitations or letters to VIP contacts.


The starting point of Pensaki® was an idea about an API that would combine the digital world (e.g. CRM solutions) with a unique and authentic – offline – handwritten experience. Thanks to sending authentic handwritten notes, invitations and letters can be as simple as setting up an email campaign in a CRM. Our customers can hereby save a lot of time.

All you need is a registered user account and the API key that you find in your “my pensaki” area. The documents you generate will be found in your cart. Simply verify them and execute the order once your done. We take care of the rest.