send-email

send-email is a skill for Claude Code, Codex from aeonfun/aeon. It costs 39 tokens per session (3,206 once invoked), scanned A, original, MIT.

An add-on for composing and sending one deliberate email to a named recipient through Resend, using the operator's writing style and saved context. It records the send and applies shared safety checks before sending.

In plain words
What is it for?
Use it to write a follow-up, introduction, proposal, or other one-off email, optionally revise the draft, and send it to the specified recipient.
Why use it?
It keeps drafting, approval-related checks, sending, and audit logging in one controlled workflow. It is intended for a single purposeful message, not bulk or cold outreach.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/aeonfun/aeon/send-email
Any agent
npx skills add aeonfun/aeon --skill send-email
Clone the repo
git clone --depth 1 https://github.com/aeonfun/aeon

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for send-email

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeonfun/aeon/send-email.svg)](https://agentmods.dev/skills/aeonfun/aeon/send-email)
Your own site
<a href="https://agentmods.dev/skills/aeonfun/aeon/send-email"><img src="https://agentmods.dev/badge/skills/aeonfun/aeon/send-email.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,206 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.03206
Opus 5 $0.00019 $0.01603
Sonnet 5 $0.00008 $0.00641
Haiku 4.5 $0.00004 $0.00321

Measured yesterday against content hash 67d4c34d7fcd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

send-email scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/send-email/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

${var} — who to email and why, e.g. [email protected] | subject=Intro | about=propose a 20-min call on X. Freeform also works ("email [email protected] to follow up on yesterday's demo"). cc= is optional. The reply-shape revise:<instruction> (Telegram force-reply, e.g. revise:make it warmer) refines the last composed draft for review only — it never sends.

Read soul/ (for voice) and memory/MEMORY.md (for context) before composing.

What this does

Composes a single, purposeful email and sends it in-run via Resend (./secretcurl), gated by the shared send caps + kill-switch and logged to the shared ledger memory/email-log.json. The send is irreversible, so it's the skill's final action, behind a set of fail-closed checks (see "Send (in-run)" below): a skipped or failed check means do not send, never send anyway. This is the general-purpose sibling of disclosure-emailer (vuln-scanner Arm C) — same caps + audit CC, any recipient and purpose instead of only vuln maintainers.

This is not a bulk or cold-outreach tool. One deliberate recipient per run, with a genuine reason to write. If the request reads as mass-mailing, list-blasting, or spam, refuse and log SEND_EMAIL_REFUSED: not a 1:1 purposeful email.

Steps

Revise intercept (Telegram force-reply — re-stage for review only, NEVER auto-send)

Before anything else, if ${var} starts with revise:, the operator replied to a "refine this email?" prompt. Handle it here and end the run — the normal compose/send flow below does NOT run, and nothing is ever sent:

  1. Strip the prefix. The instruction is ${var#revise:} (keep any inner colons), e.g. make it warmer, shorten to 3 lines, drop the meeting ask.
  2. Load the last draft from memory/drafts/send-email-latest.md (the review copy the normal run saves in step 4). If it's missing or empty, there's nothing to refine: send ./notify "Nothing to revise yet — compose an email first, then reply here to refine it." and end the run.
  3. Regenerate the email applying the instruction — re-read soul/ for voice; keep the same recipient / cc / subject unless the instruction changes them; keep the body as the exact send-ready text (operator-only notes stay out).
  4. Re-stage for REVIEW ONLY. Overwrite memory/drafts/send-email-latest.md with the revised draft. Do NOT run the Send step. A revise: reply never sends — the operator confirms a real send by invoking send-email normally (which re-composes and sends in-run).
  5. Notify the operator with the full revised draft for review — multi-line ⇒ ./notify -f <file>:
    revised draft (not sent) → <to>: <subject>
    
    <body>
    
  6. Re-offer a further revision (the operator is iterating — skip the daily dedup guard here):
    ./notify "Want another pass? Reply with a change and I'll revise the draft again (still won't send)." \
      --force-reply --placeholder "e.g. make it warmer" \
      --context "send-email::revise"
    
  7. Log - SEND_EMAIL_REVISED (draft re-staged for review, not sent) under a ### send-email heading in memory/logs/${today}.md, then end the run.

Read the full file on GitHub · 133 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 133 lines · 39 tokens per session scan A 67d4c34d7fcd

Subscribe to this mod's changes

send-email is a skill published in the GitHub repository aeonfun/aeon (716 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 3,206 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

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