Email human handoff with Jev
A draft exists (human or LLM). Jev judges policy, tone, and whether a promise is unsupported. Code sends, holds, or requests a rewrite. Jev does not deliver mail.
This unofficial page is the human handoff slice of the outbound email decisions pack. Intent: apply the Jev (TypeSafe System One) decision model to outbound email decisions human handoff. Primary search language: Email Jev human handoff. Confirm patterns on docs.typesafe.ai. This site does not sell, issue, or proxy TypeSafe keys. Use a credential you already have from the console or a documented gateway.
Independent angle (cover ≠ clone): Send/hold/rewrite as typed decisions + policy excerpts — not a clone of email-automation IA or a drip-builder page.
Email use-case context
Handoff is a first-class outcome for outbound email decisions, not a failure of Jev. When the send gate cannot auto-act, a human sees a packed email draft + recipient context — not a chat transcript. We do not ask Jev to write the reviewer essay.
Hub: Use cases. Compare, when the other tool is the real job: email automation.
Human Handoff inputs
Humans should see what the model saw (filtered), not the warehouse dump you correctly refused to POST:
{
"draft": { "subject": "Your Q4 discount", "body": "Locked 40% off if you reply today." },
"recipient": { "segment": "trial", "consent_email": true },
"policy": { "promises": "Do not invent discounts not in offer_table.", "tone": "No urgency dark patterns." },
"offer_table": { "trial_discount_pct": 20 }
}Decision signals and actions
| Signal | Typical reason enum (you name it) |
|---|---|
| policy_ok mid-band | claim_review |
| disposition rewrite / other | copy_desk |
| tone Score high | brand |
| Missing consent | do_not_call_jev |
These are application outcomes next to HTTP 200, not invented TypeSafe status codes.
Send the reviewer:
- draft as POSTed
- offer_table snapshot
- answers + chosen action
- recipient segment (not raw email if you can avoid it in logs)
Do not treat a Noul of 0.5 as a “medium” outbound email decisions score — it means yes and no are equally likely. Conjunctions stay in your code.
Guardrails and escalation
Do not page humans on a single Score unless your conjunction says so. Pair with confidence thresholds. TypeSafe’s confidence-gated examples use a lower bar for recoverable reads than for irreversible actions. Those numbers are illustrations. For outbound email decisions, treat send as the high bar (sending to a real recipient). Tune on labels — see offline evaluation.
Evaluation and rollout notes
Write the gold label back into the offline set. That is how floors move. Pin jev-1.13.0 (the versioned id) after you fit thresholds. jev-latest and the marketing line jev-1.13 can move. Log the response model. TypeSafe’s published list price for jev-1.13 is $0.042 per million input tokens (vendor claim — confirm on the models page); output tokens are free on that same page. Unused distractors still bill as input.
Official Python and JavaScript SDKs read TYPESAFE_API_KEY and retry documented 429/529. This site does not sell, issue, or proxy TypeSafe keys. Use a credential you already have from the console or a documented gateway.
Pack map
| Slice | Page |
|---|---|
| Graph and primitives | decision workflow |
What may enter state |
input contracts |
| What to gather first | evidence collection |
| Atomic rules | policy checks |
| Act / review / abstain | confidence thresholds |
| Reviewer payload | you are here |
| What to persist | audit trail |
| How it breaks | failure modes |
| Labeled replay | evaluation |
| Shadow → canary | production rollout |
FAQ
Is handoff a Jev failure? No. It is a first-class outcome. Abstention is “no auto action”; handoff is the queue you send that case to (glossary).
Should Jev draft the reviewer note? No. Send structured answers. Generation is the wrong job.
Where is the rest of the Email pack? Start with Email confidence thresholds and Email audit trail. Cluster hub: Use cases.
Does this page sell email infrastructure? No. It is an unofficial decision-layer pattern. We do not sell keys or ESP access.
Can Jev write the email? Not in this workflow. Generate elsewhere; Jev gates. That keeps cite/send decisions inspectable.
What this page does not claim
- Not an ESP or CDP.
- No deliverability benchmarks.
- Not official TypeSafe.
- Official TypeSafe status, or that jev.pro issues API keys.
- That a schema-constrained answer is automatically factually correct.
Disclaimer
This is an independent unofficial site and is not affiliated with TypeSafe AI; official documentation is available at https://docs.typesafe.ai.
Primary documentation: https://docs.typesafe.ai. Hub: Use cases.
Sources
Public TypeSafe or adjacent documentation only. No private claims.