> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/connections-and-integrations/integrationen-fur-die-sipgate-app/propstack-intergration.md).
# Propstack Integration
Propstack is a leading brand in the real estate industry, offering innovative and automated solutions for efficient and modern work environments. Their flagship product, Propstack broker software, is a state-of-the-art real estate CRM platform that supports companies with seamless workflow management across all business phases.
With sipgate, you can make calls directly from Propstack and use your contacts in the sipgate app. This means you can always see which contact is calling and do not have to switch between different tools. sipgate is your phone system with the telephony app for desktop and mobile.
#### **Integration of Propstack in the sipgate app:**
{% stepper %}
{% step %}
**Select integration**
In the sipgate app, click the gear icon on the left and select the "Integrations" item.
In the "Integrations" section, find the "Propstack" entry and click the "Connect with Propstack" button. 
{% endstep %}
{% step %}
**Enter API key**
Enter the required API key here.
{% endstep %}
{% step %}
**Confirm connection**
This means you have successfully connected Propstack and the sipgate app.
{% endstep %}
{% endstepper %}
#### Import Contacts:
{% hint style="info" %}
Note: Via Propstack API v1, a maximum of 50,000 contacts can be imported. If this is a problem because you have more contacts, please contact sipgate support. We are currently gathering demand to adapt the API to v2, where more contacts can be imported. Depending on the number of contacts to be integrated, it may take a few minutes until they are fully displayed.
{% endhint %}
#### **Find or create the API key in your Propstack account:**
In your Propstack account, click the icon with your initials in the top right corner and select "User settings" from the menu.
In the new view, under "Interfaces", select "API keys". On the right, you can now see already created API keys or create a new key using the "Add API key" button. 
If you create a new API key, a pop-up window opens after clicking the "Add API key" button.
In the API templates, you can now select sipgate App Free or Business and save.
Assign any name to the new key here and grant the parameters "Contacts" and "Users" the access rights "Read" and "View" respectively, and the parameter "Activity types" the access right "Read".
{% tabs %}
{% tab title="sipgate App Free" %}
{% endtab %}
{% tab title="sipgate App Business" %}
{% endtab %}
{% endtabs %}
Finish the entries with the "Save" button at the bottom.
---
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