A guide for working with Gmail, Google's email service, through tools for reading, searching, sending, drafting, and handling attachments.

Use it to search inboxes, read messages, download attachment data, send emails, create drafts, and delete messages.

It avoids manually piecing together the steps and permissions needed for common email tasks. It also clarifies which operations can read, send, draft, or delete messages.

gmail — Skill for Claude Code and Codex by tallclub: A guide for working with Gmail, Google's email service…

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/tallclub/matimo/gmail

Any agent

npx skills add tallclub/matimo --skill gmail

Clone the repo

git clone --depth 1 https://github.com/tallclub/matimo

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tallclub/matimo/gmail.svg)](https://agentmods.dev/skills/tallclub/matimo/gmail)

Your own site

<a href="https://agentmods.dev/skills/tallclub/matimo/gmail"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/gmail.svg" alt="Measured on agentmods" height="20"></a>

Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,134 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.

Model	Per session	Once invoked
Fable 5	$0.00021	$0.01134
Opus 5	$0.00010	$0.00567
Sonnet 5	$0.00004	$0.00227
Haiku 4.5	$0.00002	$0.00113

Measured 3d ago against content hash 77ab9d3bc983, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gmail 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 3d 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.

typescript/packages/gmail/skills/gmail/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gmail

Complete guide to using Matimo's Gmail tools for sending emails, inbox management, search, drafts, and attachments.

All Available Tools

Tool	Purpose
`gmail-send-email`	Send a new email
`gmail-list-messages`	List/search messages with Gmail query syntax and label filters
`gmail-get-message`	Get full details of a message (headers, body, attachment metadata)
`gmail-get-attachment`	Fetch a message attachment's raw data by ID
`gmail-create-draft`	Create a draft email without sending it
`gmail-delete-message`	Permanently delete a message

Authentication

Gmail tools use OAuth2. Required scopes:

https://www.googleapis.com/auth/gmail.readonly — for listing/reading messages and attachments
https://www.googleapis.com/auth/gmail.send — for sending
https://www.googleapis.com/auth/gmail.compose — for drafts
https://www.googleapis.com/auth/gmail.modify — for deleting messages

Environment variable: GMAIL_ACCESS_TOKEN (or GMAIL_CLIENT_ID / GMAIL_CLIENT_SECRET / GMAIL_REFRESH_TOKEN when using the OAuth2 provider flow).

Sending Emails

Use gmail-send-email with:

to (required) — recipient email or comma-separated list
subject (required) — email subject
body (required) — email body (supports HTML via isHtml)
cc, bcc — optional recipients

Best practices:

Always include a meaningful subject
Keep body concise; use HTML for formatting
Handle bounces — validate addresses before sending

Drafts

Use gmail-create-draft with the same parameters as gmail-send-email (to, subject, body, cc, bcc, isHtml) to stage an email for manual review before sending.

Inbox Management

Listing and Searching Messages

gmail-list-messages handles both listing and search — pass Gmail's advanced query syntax via query, plus labelIds, maxResults, pageToken, and includeSpamTrash.

Operator	Example	Purpose
`from:`	`from:[email protected]`	From specific sender
`to:`	`to:[email protected]`	Sent to
`subject:`	`subject:invoice`	In subject line
`has:attachment`		Has attachments
`is:unread`		Unread messages
`is:starred`		Starred messages
`after:`	`after:2024/01/01`	Date filter
`before:`	`before:2024/06/01`	Date filter
`label:`	`label:work`	By label
`filename:`	`filename:pdf`	Attachment type
`-`	`-from:noreply`	Exclude results

Read the full file on GitHub · 116 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.

3d ago First seen · 116 lines · 21 tokens per session scan A 77ab9d3bc983

Subscribe to this mod's changes

gmail is a skill published in the GitHub repository tallclub/matimo (11 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 1,134 once invoked, about $0.0001 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 2026-08-30.

Productivity

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gmail