gws-gmail-send

A command-line skill for sending Gmail messages from a coding agent. It supports recipients, copies, attachments, plain text or HTML bodies, drafts, and dry runs.

In plain words
What is it for?
Use it to send emails, include files, choose a sender alias, save messages as drafts, or preview the request before sending.
Why use it?
It removes the need to switch to Gmail or manually construct email requests when an automated task needs to send a message.

Skill for Claude CodeCodex

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/googleworkspace/cli/gws-gmail-send
Any agent
npx skills add googleworkspace/cli --skill gws-gmail-send
Clone the repo
git clone --depth 1 https://github.com/googleworkspace/cli

Made for: Claude Code, Codex.

Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 751 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 $0.00013 $0.00751
Opus 5 $0.00006 $0.00376
Sonnet 5 $0.00003 $0.00150
Haiku 4.5 $0.00001 $0.00075

Measured 2d ago against content hash 5002f29ed58e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gws-gmail-send 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 2d 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

skills/gws-gmail-send/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

gmail +send

PREREQUISITE: Read ../gws-shared/SKILL.md for auth, global flags, and security rules. If missing, run gws generate-skills to create it.

Send an email

Usage

gws gmail +send --to <EMAILS> --subject <SUBJECT> --body <TEXT>

Flags

Flag Required Default Description
--to Recipient email address(es), comma-separated
--subject Email subject
--body Email body (plain text, or HTML with --html)
--from Sender address (for send-as/alias; omit to use account default)
--attach Attach a file (can be specified multiple times)
--cc CC email address(es), comma-separated
--bcc BCC email address(es), comma-separated
--html Treat --body as HTML content (default is plain text)
--dry-run Show the request that would be sent without executing it
--draft Save as draft instead of sending

Examples

gws gmail +send --to [email protected] --subject 'Hello' --body 'Hi Alice!'
gws gmail +send --to [email protected] --subject 'Hello' --body 'Hi!' --cc [email protected]
gws gmail +send --to [email protected] --subject 'Hello' --body '<b>Bold</b> text' --html
gws gmail +send --to [email protected] --subject 'Hello' --body 'Hi!' --from [email protected]
gws gmail +send --to [email protected] --subject 'Report' --body 'See attached' -a report.pdf
gws gmail +send --to [email protected] --subject 'Files' --body 'Two files' -a a.pdf -a b.csv
gws gmail +send --to [email protected] --subject 'Hello' --body 'Hi!' --draft

Tips

  • Handles RFC 5322 formatting, MIME encoding, and base64 automatically.
  • Use --from to send from a configured send-as alias instead of your primary address.
  • Use -a/--attach to add file attachments. Can be specified multiple times. Total size limit: 25MB.
  • With --html, use fragment tags (, , , , etc.) — no / wrapper needed.
  • Use --draft to save the message as a draft instead of sending it immediately.

Read the full file on GitHub · 68 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. 2d ago First seen · 68 lines · 13 tokens per session scan A 5002f29ed58e

Subscribe to this mod's changes

gws-gmail-send is a skill published in the GitHub repository googleworkspace/cli (30,691 stars, last pushed 7d ago), licensed Apache-2.0. It adds 13 tokens to every session and 751 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.