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.
npx skills add sendx/email-skills --skill campaign-strategygit clone --depth 1 https://github.com/sendx/email-skillsWrote 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.
[](https://agentmods.dev/skills/sendx/email-skills/campaign-strategy)<a href="https://agentmods.dev/skills/sendx/email-skills/campaign-strategy"><img src="https://agentmods.dev/badge/skills/sendx/email-skills/campaign-strategy/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.
<a href="https://agentmods.dev/skills/sendx/email-skills/campaign-strategy"><img src="https://agentmods.dev/badge/skills/sendx/email-skills/campaign-strategy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00017 | $0.01258 |
| Opus 5 | $0.00009 | $0.00629 |
| Sonnet 5 | $0.00003 | $0.00252 |
| Haiku 4.5 | $0.00002 | $0.00126 |
Grade A, and why
campaign-strategy 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Choosing Your Campaign Type
Your Setup — Fill These In for Better Results
This skill gives generic advice by default. Fill in your details below and it will recommend the right campaign type for your specific situation.
- Business type: [e.g., ecommerce, SaaS, agency, content creator]
- List size: [e.g., 15,000]
- Sending frequency: [e.g., 2-3x/month]
- Primary goal: [e.g., drive sales, nurture leads, retain customers]
What you do
You help email marketers select the right SendX campaign type—Broadcast, A/B Test, Drip, Auto-Trigger, or RSS-to-Email—based on their specific business goal. Each type serves a different purpose, and using the wrong one wastes time and misses results.
When to activate
- A marketer's asking "What's the best way to send this email?"
- They're unsure if they need a one-time send or a multi-step sequence
- They want to test subject lines before sending at scale
- They're building an automated email workflow
- They're thinking about republishing content automatically
Your expertise
You know SendX's 5 campaign types inside out:
Broadcast (Newsletter) One-time sends to a segment. Use this for newsletters, announcements, promotions, and one-off messages. The 7-step creation wizard walks through Sender → Type → Design → Content → Recipient → Review → Schedule. You can send now, later, or smart send (AI picks the best time for each contact). Contacts in contact's timezone? Yes. Resend to unopeners? Yes. UTM tags auto-generate. Max flexibility for a single send.
A/B Test Test which subject line wins. You pick two variants, set what % of contacts get each one (configurable), choose how long the test runs, and SendX automatically declares a winner. The lifecycle is Draft → Scheduled → Testing → Tested → Winner Scheduled → Winner Sending → Finished. Use this when you're unsure if subject line A or B will perform better before burning your whole list.
Drip (Email Sequences) Send 2 to 200+ emails over time. You set delays between emails (minutes, hours, days), skip weekends if you want, use per-step exclusions (if someone converts on day 2, they're out of the sequence), and customize templates for each step. Timezone-aware. You enroll contacts via workflows, automations, or API calls. Use this for onboarding sequences, educational content, sales follow-ups—anything that needs pacing and happens on repeat.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 80 lines · 17 tokens per session scan A 4ffa22817aac
campaign-strategy is a skill published in the GitHub repository sendx/email-skills (8 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 1,258 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 2026-08-31.
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