We gave agents real email addresses and broke deliverability, threading, and privacy
saltexx · reddit · 2026-08-24
Truespar open-sourced 'sentio', a tool giving AI agents real email addresses. The author detailed critical engineering pitfalls:
- Deliverability: Requires matching reverse DNS (PTR), unblocking port 25, and strict DKIM/DMARC setup.
- Threading: Must set In-Reply-To header correctly, or Gmail splits conversations.
- Loops: Auto-responders can loop forever with agents; guard via Auto-Submitted headers.
- Address Reuse: Never reuse email slugs after deleting an agent to prevent old emails reaching new customers. Addresses are now append-only.
More from coding & agent
- From Scripts to Loops: Engineering Challenges and Solutions for Production Agentic Systems — Pavan_Belagatti · 2026-08-25
- Apodex 1.1 Released: Asynchronous Agent Teams & Open Benchmarks — KaiyuYang4 · 2026-08-25
- AI Agents Excel at Fact-Checking But Could Lower Surveillance Costs — OwainEvans_UK · 2026-08-25
- Grok Bot Source Code Reverse-Engineered Due to Exposed Source Maps — dotey · 2026-08-25
- Building web agents: filtering bad URLs to save context tokens — Chris__Codes · 2026-08-25
- Event: Running a Company as a Solo Operator Using Multi-Agent Dispatch — Al_Grigor · 2026-08-25