A command-line email tool for listing, reading, marking, and archiving messages. It reads mail synchronized to your computer from services such as Fastmail or Google Workspace.

Use it to inspect inboxes, read messages, mark them as read, archive them, and work with personal or work email accounts.

It lets you handle email from the terminal and read synchronized messages without needing a web browser or an active network connection.

check-email — Skill for Claude Code by ericboehs/claude-plugins

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.

Any agent

npx skills add ericboehs/claude-plugins --skill check-email

Clone the repo

git clone --depth 1 https://github.com/ericboehs/claude-plugins

Made for: Claude Code.

Or install cli-email, the plugin that ships this one along with the rest of its 1 skill.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ericboehs/claude-plugins/check-email/github.svg)](https://agentmods.dev/skills/ericboehs/claude-plugins/check-email)

Your own site

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/check-email"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/check-email/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/check-email"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/check-email.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 813 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00035	$0.00813
Opus 5.5	$0.00014	$0.00325
Sonnet 5.5	$0.00007	$0.00163
Haiku 4.5	$0.00003	$0.00081

Measured 2mo ago against content hash 83291320d80d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

check-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 2mo ago.

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.

plugins/cli-email/skills/check-email/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLI Email (himalaya)

Manage email from the command line using himalaya with local Maildir sync via mbsync.

Accounts

Name	Provider	Usage
`personal`	Fastmail (default)	Personal email
`oddball`	Google Workspace	Work/VA email

The default account is personal. Use -a oddball for work email.

Prerequisites

himalaya must be installed and configured. If any command fails with "command not found", suggest running /setup-email.

Email is synced to local Maildir (~/Mail/) via mbsync + IMAP IDLE (near-instant). Himalaya reads from local Maildir — no network needed for reading.

Commands

List inbox (unread envelopes)

# Personal inbox (default)
himalaya envelope list

# Work inbox
himalaya envelope list -a oddball

# List a specific folder
himalaya envelope list -f Sent
himalaya envelope list -f "[Gmail]/Sent Mail" -a oddball

Read a message

# Read by ID (from envelope list output)
himalaya message read <id>

# Read from work account
himalaya message read <id> -a oddball

Mark as read

himalaya flag add <id> seen
himalaya flag add <id> seen -a oddball

Archive messages

Use the mail-archive script (not raw himalaya move) — it handles UID stripping for mbsync compatibility:

# Archive from personal (moves to Archive folder)
mail-archive <id> [id...]

# Archive from work/Gmail (moves to [Gmail]/All Mail)
mail-archive -a oddball <id> [id...]

Sync email manually

# Sync all accounts
mbsync -a

# Sync a single account
mbsync personal
mbsync work

# Full pipeline (sync + text extraction + search index update)
mail-sync -a

Search email

Use qmd for full-text search across all indexed email:

# Fast keyword search (BM25)
qmd search "quarterly report" -c email

# Semantic search with reranking (slower, more relevant results)
qmd query "emails about the server migration timeline" -c email -n 5

# Search across everything — email, wiki, notes
qmd query "meeting with Alex about deployment"

Read the full file on GitHub · 119 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.

2mo ago First seen · 119 lines · 35 tokens per session scan A 83291320d80d

Subscribe to this mod's changes

check-email is a skill published in the GitHub repository ericboehs/claude-plugins (2 stars, last pushed 2mo ago), licensed MIT. It adds 35 tokens to every session and 813 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

Productivity

check-email next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
check-emailericboehs/claude-plugins	Skill	2	2mo ago	MIT	A	35	Claude Code
orbit-notionnexu-io/open-design	Skill	106k	today	Apache-2.0	A	117	Claude Code, Codex
agentmailpaperclipai/paperclip	Skill	112k	today	MIT	A	30	Claude Code, Codex
Cortexdanielmiessler/LifeOS	Skill	20k	2d ago	MIT	A	184	Claude Code
rowboat-spacesrowboatlabs/rowboat	Skill	18k	today	Apache-2.0	A	60	Claude Code, Codex
feishuHmbown/CodeWhale	Skill	41k	6d ago	MIT	A	33	Claude Code, Codex
pinchtab-mcppinchtab/pinchtab	Skill	11k	11d ago	MIT	A	52	Claude Code, Codex