# EMARSYS DEVELOPER PORTAL ![API header](https://raw.githubusercontent.com/EmarsysDocumentationGists/developer-hub-public-assets/master/assets/images/LPBannerWide.png)
## API overview Welcome to the SAP Emarsys API specifications page. Find all the details of API offerings here and for more information on the SAP Emarsys Customer Engagement Platform, visit our [Help Portal](https://help.emarsys.com/hc/en-us/).
## What APIs do we offer? Currently we have three sets of APIs available, as well as the documentation for Web Extend, our data collection module. [//]: # (TO ANY EDITOR OF THIS PAGE: Please don't touch the layout of the items below as it is carefully organized with whitespaces)   Emarsys API
            Manage all capabilities of the SAP Emarsys Customer Engagement platform with this powerful API.

Loyalty API v4
           The Loyalty Contact API v4 is for managing your contacts in your loyalty program with advanced capabilities.

   SMS API
            A small but powerful set of endpoints designed to manage your messaging campaigns.

   SMS Partner API
            All the necessary endpoints for SMS service providers to integrate with our system.

Web Extend
            All you need to know about the Emarsys data collection module, which tracks visitor interactions on your website.

![developer community.png](https://raw.githubusercontent.com/EmarsysDocumentationGists/developer-hub-public-assets/master/assets/images/CommunityBanner1300.png) | | Emarsys API | Loyalty v4 |SMS | | :-- | :-- | :-- | :-- | |**https://**| `api.emarsys.net/api/` | `contact-api.loyalsys.io/api/v4` |`api.emarsys.net/api/sms/` | |**Postman**| [collection](https://raw.githubusercontent.com/EmarsysDocumentationGists/developer-hub-public-assets/master/resources/EmarsysV2PostmanCollection.json)| [collection](https://raw.githubusercontent.com/EmarsysDocumentationGists/developer-hub-public-assets/master/resources/Loyalty%20Contact%20API%20v4%20(0.8.0).postman_collection.json) | [collection](https://raw.githubusercontent.com/EmarsysDocumentationGists/developer-hub-public-assets/master/resources/SMS%20Postman.postman_collection.json) | |**style**| REST | REST |REST | |**authentication**| WSSE over SSL | SSL plus `x-api-key` | WSSE over SSL | | **⚡QUICK ACCESS TO OUR MOST USED APIs** | | --- | | [Creating one or more new contacts](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk4MDc-create-contacts) | | [Updating one or more contacts](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk4MTE-update-contacts) | | [Querying a contact's specific fields](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk4MDk-list-contact-data) | | [Fetching a contact's internal ID](https://dev.emarsys.com/docs/emarsys-api/b3A6NDE1MzI0NDE-get-internal-contact-identifiers) | | [Exporting campaign responses (such as unsubscribes and bounces)](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk4NDE-get-a-response-summary) | | [Creating a new field](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk4MTY-create-a-field) | | [Triggering an external event](https://dev.emarsys.com/docs/emarsys-api/b3A6MjQ4OTk5MDU-trigger-an-external-event) | | [Sending transactional emails (order confirmation, password recovery, etc.)](https://dev.emarsys.com/docs/emarsys-api/ZG9jOjI0ODk5NzIx-create-triggered-messages) |