Sellsy

Version 1.0 · Last updated 2026-08-10

Context

Sellsy is a French all-in-one CRM that combines sales, invoicing, and accounting for SMBs. With Unless, that combined sales, invoicing, and accounting data feeds Living Context, the engine that connects your AI customer agent to your business systems.

That combination means your agent knows the deal stage and the billing history behind it before the conversation starts - useful whether it’s about closing a sale or resolving an invoice question - across acquisition, retention, expansion, and support.

An existing customer asking about an upgrade, or a prospect showing buying intent, routes as a signal into Sellsy tagged for the rep already on that account, instead of sitting in a shared list.

Key benefits

• Full context across sales and billing: Your agent reads deal, invoice, and account data straight from Sellsy, so customers don’t repeat themselves whether they’re mid-sale or mid-invoice.
• Signals that reach the right rep: Buying and upsell signals your agent spots on your website route into Sellsy tagged for the rep already on that account, not a shared list nobody owns.

How does it work?

Unless connects to Sellsy through Living Context, so your agent’s conversations draw on deal, invoice, and account records together. Buying or upgrade signals it spots on your website route into Sellsy tagged for the rep already on that account.

Install instructions

Once at the Integrations tab of your Unless dashboard, you can select “Configure” for the Sellsy integration. This will open a popup where you can connect your Sellsy account and set up the integration.