deliverability-test-public: Design & UI for AI Agents | OpenAgentSkill

Overview

Compare reply rates, bounce rates, and positive reply rates broken down by inbox type (SMTP / Gmail / Outlook) for a Smartlead account. Use when you want to know "which inbox type delivers best" or when debugging unexplained deliverability differences across a mixed fleet. Operates via Smartlead API only (no database required).

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Deliverability Test — Inbox Type Comparison

Compare reply rates, bounce rates, and positive reply rates broken down by inbox type (SMTP, Gmail / G Suite, Outlook / Office365) across your Smartlead account. Use it to answer "are my Gmail inboxes performing better than my SMTP ones?" or "why is one inbox type bouncing more than the others?"

Why this exists

Different inbox types have different deliverability characteristics:

Gmail / G Suite — highest trust, fewest bounces, often best reply rates
Office365 — good reputation, but stricter spam filtering
SMTP (Zapmail, Maildoso, Mailforge, custom) — varies wildly by provider, often has higher bounces in the first 30 days of domain life

If your campaigns mix inbox types, this skill shows which type is earning its keep.

What you need

SMARTLEAD_API_KEY in env
Optional: --client-id=<id> for sub-clients
Optional: --days=<N> lookback (default 7)

Steps

# Full account, last 7 days
npx tsx scripts/inbox-type-compare.ts

# Specific sub-client, 14-day lookback
npx tsx scripts/inbox-type-compare.ts --client-id=5560 --days=14

# Just show today
npx tsx scripts/inbox-type-compare.ts --days=1

Output

Inbox Type Comparison — last 7 days

Type              Inboxes    Sent     Replies   Bounces    Reply %   Bounce %
---------------   ------   -------   -------   -------    -------   --------
G Suite               12    3,120       42        12        1.35%      0.38%
Office365             24    6,440       65        28        1.01%      0.43%
SMTP                  44   10,780       55        98        0.51%      0.91%
---------------   ------   -------   -------   -------    -------   --------
TOTAL                 80   20,340      162       138        0.80%      0.68%

Takeaways:
- G Suite has the highest reply rate (1.35%) and lowest bounce rate.
- SMTP reply rate is 60% lower than G Suite — investigate domain reputation.
- SMTP bounce rate is 2x average — run /email-deliverability-audit on SMTP domains.

How it works

Pulls all email accounts via /email-accounts API paginated
Groups by type field (GMAIL, OUTLOOK, SMTP, etc.)
For each campaign that uses these inboxes, pulls per-inbox stats from /campaigns/{id}/analytics and /campaigns/{id}/sequence-analytics-by-email-account
Aggregates sent/replies/bounces within each type group
Prints formatted table

Common gotchas

Reply rate here is RAW, not positive. For positive reply rate (the more important metric), use /positive-reply-scoring.
Small inbox counts are noisy. If you only have 2 Gmail inboxes and 40 SMTP ones, the Gmail numbers aren't statistically meaningful.
Inbox type labels can be surprising. Some providers register as "SMTP" even when they're technically Gmail-proxied. Trust the label Smartlead gave them.

What to do next

If one inbox type is underperforming: /smartlead-inbox-manager to retire the bad ones (tag retired, disable warmup). If replacements are needed, /zapmail-domain-setup-public to provision new domains on a different provider type.

If all types are healthy: back to the weekly rhythm via /cold-email-weekly-rhythm.

Or wait: small sample sizes (<500 sends per type) are noisy. If your results are inconclusive, run again in 7 days with more data.

/email-deliverability-audit — full audit (SPF/DKIM/DMARC + reputation + spam placement)
/positive-reply-scoring — the metric that matters, not just reply rate
/smartlead-inbox-manager — rotate out bad inboxes, tag by performance

Scripts

scripts/inbox-type-compare.ts — pulls + compares per-type rates

View source ↗

File metadata

name: deliverability-test-public
description: Compare reply rates, bounce rates, and positive reply rates broken down by inbox type (SMTP / Gmail / Outlook) for a Smartlead account. Use when you want to know "which inbox type delivers best" or when debugging unexplained deliverability differences across a mixed fleet. Operates via Smartlead API only (no database required).

View original text

---
name: deliverability-test-public
description: Compare reply rates, bounce rates, and positive reply rates broken down by inbox type (SMTP / Gmail / Outlook) for a Smartlead account. Use when you want to know "which inbox type delivers best" or when debugging unexplained deliverability differences across a mixed fleet. Operates via Smartlead API only (no database required).
---

# Deliverability Test — Inbox Type Comparison

## Why this exists

Different inbox types have different deliverability characteristics:
- **Gmail / G Suite** — highest trust, fewest bounces, often best reply rates
- **Office365** — good reputation, but stricter spam filtering
- **SMTP** (Zapmail, Maildoso, Mailforge, custom) — varies wildly by provider, often has higher bounces in the first 30 days of domain life

If your campaigns mix inbox types, this skill shows which type is earning its keep.

## What you need

- `SMARTLEAD_API_KEY` in env
- Optional: `--client-id=<id>` for sub-clients
- Optional: `--days=<N>` lookback (default 7)

## Steps

```bash
# Full account, last 7 days
npx tsx scripts/inbox-type-compare.ts

# Specific sub-client, 14-day lookback
npx tsx scripts/inbox-type-compare.ts --client-id=5560 --days=14

# Just show today
npx tsx scripts/inbox-type-compare.ts --days=1
```

## Output

```
Inbox Type Comparison — last 7 days

Type Inboxes Sent Replies Bounces Reply % Bounce %
--------------- ------ ------- ------- ------- ------- --------
G Suite 12 3,120 42 12 1.35% 0.38%
Office365 24 6,440 65 28 1.01% 0.43%
SMTP 44 10,780 55 98 0.51% 0.91%
--------------- ------ ------- ------- ------- ------- --------
TOTAL 80 20,340 162 138 0.80% 0.68%

Takeaways:
- G Suite has the highest reply rate (1.35%) and lowest bounce rate.
- SMTP reply rate is 60% lower than G Suite — investigate domain reputation.
- SMTP bounce rate is 2x average — run /email-deliverability-audit on SMTP domains.
```

## How it works

1. Pulls all email accounts via `/email-accounts` API paginated
2. Groups by `type` field (GMAIL, OUTLOOK, SMTP, etc.)
3. For each campaign that uses these inboxes, pulls per-inbox stats from `/campaigns/{id}/analytics` and `/campaigns/{id}/sequence-analytics-by-email-account`
4. Aggregates sent/replies/bounces within each type group
5. Prints formatted table

## Common gotchas

- **Reply rate here is RAW, not positive.** For positive reply rate (the more important metric), use `/positive-reply-scoring`.
- **Small inbox counts are noisy.** If you only have 2 Gmail inboxes and 40 SMTP ones, the Gmail numbers aren't statistically meaningful.
- **Inbox type labels can be surprising.** Some providers register as "SMTP" even when they're technically Gmail-proxied. Trust the label Smartlead gave them.

## What to do next

**If one inbox type is underperforming:** `/smartlead-inbox-manager` to retire the bad ones (tag `retired`, disable warmup). If replacements are needed, `/zapmail-domain-setup-public` to provision new domains on a different provider type.

**If all types are healthy:** back to the weekly rhythm via `/cold-email-weekly-rhythm`.

**Or wait:** small sample sizes (<500 sends per type) are noisy. If your results are inconclusive, run again in 7 days with more data.

## Related skills

- `/email-deliverability-audit` — full audit (SPF/DKIM/DMARC + reputation + spam placement)
- `/positive-reply-scoring` — the metric that matters, not just reply rate
- `/smartlead-inbox-manager` — rotate out bad inboxes, tag by performance

## Scripts

- `scripts/inbox-type-compare.ts` — pulls + compares per-type rates

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

Dependency or permission surface needs review
Permission surface may require sandboxing
The description states it compares 'positive reply rates' but the script only computes raw reply rates and bounce rates; positive reply rate is not included in the output.
The script relies on the Smartlead API and may be affected by API rate limits or changes, but it includes retry logic.

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Start with one small task

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Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.

Source & trust

Indexed

Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.

License: MIT
Version: 1.0.0
Last GitHub push: Aug 18, 2026
Registry updated: Sep 5, 2026
Instruction path: skills/deliverability-test-public/SKILL.md @ f24320d4ab3d

Version reported in registry metadata; check source releases before relying on it.

Quality

75/100

Strong

Trust

59/100

Do not auto-install

Audit

77/100

Needs review

Agent access

This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.

Open install API LLM text format Open manifest Auto-resolve Plan

More details

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Creator: growthenginenowoslawski
Source: growthenginenowoslawski/coldoutboundskills
Indexed by: OpenAgentSkill community index

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