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Deliver Response Processing
From version 12.1.5, Deliver adopts a push model from On-Demand side so that reply messages arriving from WhatsApp and SMS from On-Demand server are pushed by Deliver to RCT as and when they appear. This significantly reduces data transfer between On-Demand and On-Premises because the responses will be pushed only when they arrive.

Administrator Guides
- Startup and Administrator Guide
  - Hosted messaging using Campaign and Deliver
    When Unica Campaign is integrated with Unica Deliver, you can use Deliver to conduct highly personalized digital marketing campaigns.
  - Configuring the local HCL Unica environment for Deliver
  - Connecting to hosted email services
    To access message services provided by Unica, you must configure a connection between the local HCL Unica installation and HCL Unica hosted services.
  - Working with the Response and Contact Tracker
    The Response and Contact Tracker (RCT) is installed in your local environment and communicates with HCL Unica hosted services to retrieve and process data for email contacts, email delivery, and recipient responses, such as link clicks and opens. The RCT must be running in order to retrieve link tracking and email delivery notification data from HCL Unica hosted services .
  - Deliver Response Processing
    From version 12.1.5, Deliver adopts a push model from On-Demand side so that reply messages arriving from WhatsApp and SMS from On-Demand server are pushed by Deliver to RCT as and when they appear. This significantly reduces data transfer between On-Demand and On-Premises because the responses will be pushed only when they arrive.
    - ResponseOut module
      The ResponseOut module on Deliver OD side pushes only WhatsApp and SMS replies to the customers on-premises network. This simplifies the requirement of having static IP down to single module. Each module which processes response relays it to ResponseOut module via separate Kafka topics for each customer account and type of response. This allows ResponseOut module to scale horizontally to process responses coming from all modules faster and push them to customers on-premises network.
    - Changes on RCT to accept responses over webhook
      RCT can be enhanced to accept incoming responses as it already handles further processing like saving those responses in Deliver OP tables or handing over responses to Journey for messages sent from Journey.
  - Testing the Deliver installation
    To ensure access to all hosted email features, test the configurations and connections for your Campaign and Deliver installations after you enable Deliver, expand your Deliver installation, or upgrade the Campaign installation.
  - Unica Deliver REST APIs
    Deliver has exposed REST APIs which can be used to perform variety of operations like working with Email, SMS, Push, WhatsApp messages and communication templates, working with batch production and test message sending as well as transactional message sending. This chapter provides details of these APIs, how to authenticate and generate API token which is needed to call these APIs.
  - Configurations for Unica Deliver
    The Unica Platform provides various configuration properties to modify the behavior and appearance of Deliver. Some configuration properties are set during installation. You can change configuration properties at any time.
  - Utilities for Deliver
    Deliver provides several scripts that you use to administer Deliver functions.
  - About troubleshooting Deliver
    Unica Deliver provides various tools and techniques that you can use to investigate issues related to your Campaign and Deliver installations.
  - Managing user access to mailing features
    Campaign and Deliver use roles and permissions provided by the Unica Platform to control user access to messaging features in Deliver and Campaign. You must have permissions in Unica Platform and Campaign to make the required changes. You must also be familiar with how to configure roles and permissions in the Platform and how to define security policies for Campaign.
  - Technote (troubleshooting)
  - Deliver channel vendor account configuration
  - RCT Reverse Proxy Configurations
- Transactional Message Administrator Guide

Deliver Response Processing

From version 12.1.5, Deliver adopts a push model from On-Demand side so that reply messages arriving from WhatsApp and SMS from On-Demand server are pushed by Deliver to RCT as and when they appear. This significantly reduces data transfer between On-Demand and On-Premises because the responses will be pushed only when they arrive.

In the earlier versions, RCT was downloading responses of messages, sent via Unica Deliver and user interactions, to those messages, periodically, by polling OD dataapp server. This was not an effective model as response availability depended on the download frequency. Additionally, if there were no pending responses, RCT kept polling for responses resulting in bandwidth consumption and increase in load on OD dataapp server, which was responsible for serving responses to RCT.

Instead of the earlier mechanism, Deliver pushes these responses as and when possible. To effectively utilize resources like bandwidth and processing capabilities of downstream systems, the download frequency for different type of responses are as mentioned in the following points:

Message send events for all channels and responses for email channel uses the current configuration of 1000 responses or 10 minutes whichever is earliest to send them together to OP.
All type of delivery receipts for other channels, for example, SMS, WhatsApp, and Push are sent more often, like at an interval of 5 minutes, as these channels are more interactive.
Reply messages for SMS and WhatsApp are pushed to OP as soon as they enter the OD server. This ensures that conversations can happen without a signifcant delay.

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