
flexEngage Support Resources
This is the “one-stop shop” to get technical documentation on building an integration with our API and activating the existing integration on the system if there is an integration built for that system.
Click on a button below to take you to the section that you need.
Technical Integration Guides
This section contains the technical documents for integrating the retail software system with flexEngage. These documents are beneficial for a member of the retail software company’s integration team or a retailer’s technical team adding the integration.
Click on a button below for the integration documentation on the flexEngage Technology that you need..
Receipts API - REST
Receipts API – REST v1.x
This PDF document covers how to interact with our API to send transactions to use the following services: Digital Receipts, Printed Offers, and SMS Receipts
Resend Digital Receipt API – REST v1.x
This PDF document covers how to interact with this API to re-send digital receipts to an email address. This is ideal if you want to build the functionality to re-send digital receipts directly in the POS or another system (like a CMS).
JSON Payload Examples – REST v1.x
This ZIP package contains JSON payload request examples for calling our API for various transaction types. These are helpful for integrators and developers who are writing code to call our API to get started with development.
Receipts API - SOAP
sendReceipt API Guide (4.x)
This PDF document covers how to interact with our API to send transactions to use the following services: Digital Receipts, Printed Offers, and SMS Receipts
eCommerce Suite (Dynamic Messages, flexTracker, Curbside)
Technical Integration Guide – eCommerce Dynamic Messages
This document explains how to set up your Order Management System (OMS) to interact with our eCommerce Dynamic Messages product.
Technical Integration Guide – flexTracker
This document explains how to set up your Order Management System (OMS) to interact with our flexTracker product.
eCommerce API – REST
This document covers how to interact with our API to send notifications to use the following services: eCommerce Dynamic Messages, flexTracker, and Curbside.
JSON Payload Examples – REST v1.x
This ZIP package contains JSON payload request examples for calling our API for various transaction types. These are helpful for integrators and developers who are writing code to call our API to get started with development.
Other Technical Integration Information
eMail Address Validation Service
If you have purchased our eMail Address Validation service, this document explains how to use the service to validate emails.
Facebook Ads Offline Conversion Setup
If you are using flexEngage Digital Receipts, this document explains how to set up Facebook’s Offline Conversion.
Plugins & Documentation
To help reduce the lift on retailers’ technical teams, we have partnered with a number of retail software systems by building integrations that can be configured on the retail software system so retailers can begin to use our product more quickly (versus building the integration). We are continuing to get more integrations with retail software systems developed.

We have an integration with the Aptos POS system (both Store 6.4 and Aptos One) built within the core APTOS product, and we have an integration developed with the APTOS EOM Order Management System.

We have a plugin for XStore versions 15 through 18 (Windows and Linux) that you can install and configure on your XStore POS system. Download the ZIP file containing the executable JAR and the installation instructions.

We have an integration with the STORIS POS system (version 9.0) built within the product.

We have plugin for Retail Pro 9 that you can install and configure on your Retail Pro v9 system. Download the ZIP file containing the installation file, the installation instructions, and a “one-sheeter” for your cashiers on sending digital receipts.