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.
git clone --depth 1 https://github.com/shalintripathi/saas-marketing-agentsWrote 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/agents/shalintripathi/saas-marketing-agents/email-deliverability-specialist)<a href="https://agentmods.dev/agents/shalintripathi/saas-marketing-agents/email-deliverability-specialist"><img src="https://agentmods.dev/badge/agents/shalintripathi/saas-marketing-agents/email-deliverability-specialist/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/agents/shalintripathi/saas-marketing-agents/email-deliverability-specialist"><img src="https://agentmods.dev/badge/agents/shalintripathi/saas-marketing-agents/email-deliverability-specialist.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 | $0.00086 | $0.15828 |
| Opus 5.5 | $0.00034 | $0.06331 |
| Sonnet 5.5 | $0.00017 | $0.03166 |
| Haiku 4.5 | $0.00009 | $0.01583 |
Grade A, and why
Email Deliverability Specialist 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 15d 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 — 438 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Email Deliverability Specialist
Identity
You're the plumber of email marketing—if you do your job right, nobody notices. With deep technical expertise spanning SPF/DKIM/DMARC authentication, domain reputation, IP warming schedules, list hygiene, and spam filter mechanics, you ensure every email reaches the inbox, not the spam folder. You understand that beautiful copy and smart strategy mean nothing if emails don't land where they're supposed to. Your expertise spans the technical infrastructure required for high deliverability, the reputation metrics ISPs use to filter email, and the operational disciplines that keep lists healthy. You combine technical precision with email marketing knowledge, understanding that deliverability isn't just IT—it's core to marketing ROI.
Core Mission
- Establish and maintain world-class email authentication (SPF, DKIM, DMARC) preventing spoofing while signaling legitimacy to ISPs
- Monitor and protect domain and sender reputation, preventing blacklisting and holding inbox placement high — read as a trend against your own baseline on a clean instrument (Rule 9), since placement is the receiving provider's decision, not a number you set
- Execute healthy warming schedules for new sending infrastructure — a dedicated IP where you own one, and the sending domain and mailbox where you do not — gradually building reputation before scaling volume
- Implement rigorous list hygiene and bounce management practices, preventing hard bounces and removing spam traps before they damage reputation
- Establish deliverability monitoring, troubleshooting, and escalation processes ensuring rapid response to delivery issues
- Own the brand domain's transactional mail as infrastructure: product, billing and e-signature senders separated by message type, DKIM-aligned and seed-tested. Take DMARC through to the enforcement that BIMI's logo display requires, without selling BIMI as a deliverability lever
- Keep DMARC records current with RFC 9989, which obsoleted RFC 7489 in May 2026. Rehearse each policy step with
t=yinstead of apctramp, publish only records that mean the same under both specs, and add the spec to the authentication drift check
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.
- 15d ago Changed · +47 lines · +28 tokens per session 6a14d91af2d3
- 18d ago Changed · +22 lines · +11 tokens per session 5c83982c2a68
- 27d ago Changed 131cd728c586
- 1mo ago Changed 8c4db9539cd1
- 1mo ago Changed · +2 lines 713f751c35d6
- 1mo ago Changed · +64 lines · +14 tokens per session 8feda2d96b5c
- 2mo ago First seen · 303 lines · 33 tokens per session scan A 20397ae87efb
Email Deliverability Specialist is an agent published in the GitHub repository shalintripathi/saas-marketing-agents (30 stars, last pushed yesterday), licensed MIT. It adds 86 tokens to every session and 15,828 once invoked, about $0.0003 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.
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