---
title: "Sellsy"
category: "crm"
order: 3
excerpt: "Bidirectional contact and invoice synchronisation between BlueRockTEL and Sellsy, supporting both API v1 and v2."
url: "https://www.sellsy.com"
---

Sellsy is a French CRM and billing platform used by many operators to manage their customer base and invoicing. The BlueRockTEL integration keeps both platforms aligned without manual data entry: contacts stay in sync and invoices generated in BlueRockTEL are automatically pushed to Sellsy.

## Data Flow

### BlueRockTEL to Sellsy

- **Invoices**: when an invoice is generated in BlueRockTEL, it is pushed to Sellsy with the reference number, amount, due date, and full line items.
- **Contact updates**: contact records modified in BlueRockTEL are propagated to Sellsy.

### Sellsy to BlueRockTEL

- **Contacts**: contact records created or updated in Sellsy are pulled into BlueRockTEL.

## What It Enables

Operators who use Sellsy as their primary CRM keep both systems automatically aligned. Invoices generated in BlueRockTEL appear in Sellsy immediately, giving sales and finance teams a single view of customer activity without switching platforms.

## Sync Schedule

| Data type | Frequency | Trigger |
|---|---|---|
| Contacts | Every 2 hours | Scheduled sync |
| Invoices | Every 15 minutes | Also triggered on invoice generation |

The integration supports both Sellsy API v1 and API v2, and can be configured to target either version depending on the Sellsy account setup.