Propstack CRM Integration
Automatic lead transfer to Propstack - contact data, property details, and GDPR status.
Last updated: 2026-01-26
The Propstack integration automatically transfers new leads to your Propstack CRM. All relevant contact and property data is synchronized.
Transferred Data
Contact Data
| Field | Description |
|---|---|
| Salutation | Mr/Ms |
| First Name | Contact's first name |
| Last Name | Contact's last name |
| Phone Number | Primary phone number |
| Alternative Number | Alternative phone number |
| Language | Preferred language |
Address
| Field | Description |
|---|---|
| Street | Street name |
| House Number | House number |
| Postal Code | ZIP code |
| City | City/Town |
GDPR
| Field | Description |
|---|---|
| Contact Permission | Consent for contact |
| GDPR Status | Data privacy consent |
Property Details (Custom Fields)
Property data is transferred as Custom Fields in Propstack:
| Custom Field | Description |
|---|---|
| id | Unique lead ID |
| segment | Property type (house, apartment, etc.) |
| wohnflaeche | Living area in m² |
| grundstuecksflaeche | Plot size in m² |
| zimmer | Number of rooms |
| baujahr | Year built |
| immobilienstandard | Equipment quality |
| immobilienzustand | Current condition |
| preiseinwertung | Estimated sale price |
| mietspanne | Estimated rental range |
| immobilienbewertung | Link to valuation |
| url | Link to lead detail page |
Displaying Custom Fields in Propstack
To see the property data in Propstack, you need to create the corresponding Custom Fields in Propstack.
How to create the Custom Fields:
- Open Propstack Admin → Custom Fields
- Select Kontakte (Contacts) as category
- Create a new group (e.g., "fluss.ai Property Data")
- Add the fields - important: The field name must match exactly with the names listed above (e.g.,
wohnflaeche,baujahr) - Extend your contact mask with the new group
Detailed instructions with video available in the Propstack Documentation: Custom Fields (German).
Activation
How to activate the integration:
- Open Settings (top left)
- Navigate to CRM Integration
- Select Propstack under "New Lead"
The Propstack automation requires initial setup by our team. Contact support@fluss.ai to get started.
- Save the settings
After activation, all new leads will be automatically transferred to Propstack. Existing leads will not be synchronized retroactively.
Requirements
- Active Propstack account
- fluss.ai Pro or higher (CRM integrations are available from the Pro plan)
- Propstack API Key V1
Setting up the API Key
For the integration, you need the API Key V1 from Propstack:
- Open Propstack API Key Management
- Navigate to Verwaltung → API-Schlüssel
- Create a new API key or use an existing one
- Ensure the permission Kontakte → Erstellen (Contacts → Create) is enabled
The API key requires at least the "Kontakte > Erstellen" (Contacts > Create) permission to automatically create leads.
For questions about setup, contact our support team at support@fluss.ai.