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Nex Cold Email System be
A multi-tenant, state-machine driven cold email sending core with draft/test/live modes and full audit trails.
$79
nex-cold-email-system-be
Example session with this skill installed
Setup a cold email sending system for my FastAPI app. I need a safety mode to send to my own inbox first and I must have an audit log for every failure or success.
- Read your context and instructions
- Compiled the nex-cold-email-system-be
Generated cold-email-system/ folder
- sender.py: Orchestrator with Draft/Test/Live modes.
- campaigns.py: SQLAlchemy models for EmailCampaign & EmailEvent.
- resend_client.py: Typed error handling + idempotency.
Sent state: [SENDING] -> [SENT] or [FAILED]. No orphaned campaigns.
Connects securely to your tools. The creator never sees your data.
About this skill
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.
How to use
Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.
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- Passed all security checks, Safe to install