Yes, The sample codes for many programming languages are available within Pepipost documentation to help our customers integrate faster. 

In order to check the same, you can login to your Pepipost account and go to settings =>integrations => API integration and scroll below to locate various sample codes.

Along with this, you can also see Official Pepipost libraries for integrations within the same page at the bottom which you can make use of for quicker integration with Pepipost.