Nex Cold Email System be

What it does

Nex Cold Email System BE is a production-ready sending core for cold-outreach platforms. It provides a robust backend orchestrator that handles the transition of email campaigns from 'approved' to 'sent' using Resend as the delivery provider. Built with a multi-tenant focus, it ensures your campaigns are never left in a 'half-sent' or orphaned state.

Why hit 'Buy' instead of prompting?

Building a cold email pipeline is more than just an API call. This skill implements a sophisticated state machine that handles the 'messy' side of email: transient failures, per-tenant mode switching, and mandatory audit trails. It prevents the primary nightmare of outreach—accidentally sending draft content to real prospects—through a hardcoded safety hierarchy (Draft > Test > Live).

Frameworks & Tools

• Python & FastAPI: Seamless integration into modern web backends.
• SQLAlchemy/PostgreSQL: Full relational schema for campaigns, prospects, and audit events.
• Resend: Direct integration through a typed client wrapper with idempotency support.
• Multi-Tenant Architecture: Ready-made for SaaS or agency use cases.

The Output

You receive a complete cold-email-system/ module including a state-machine orchestrator (sender.py), the relational data model (campaigns.py), and a resilient resend_client.py. Every send generates an EmailEvent, providing a forensic record of exactly who received what and when.

Built by Nex AI. More skills and info at nex-ai.be and slopsome.com.