# Sendsets

Use Sendsets to turn a software product into useful outbound campaigns, then operate...

- Repository: https://github.com/hashgraph-online/awesome-codex-plugins (1479 stars)
- Category: Engineering
- License: Apache-2.0
- Last updated: 2026-11-01
- Runs scripts: yes, review before use

## Install

Claude Code: `npx skills add hashgraph-online/awesome-codex-plugins --skill sendsets -g -a claude-code -y`
Codex: `npx skills add hashgraph-online/awesome-codex-plugins --skill sendsets -g -a codex -y`
Cursor: `npx skills add hashgraph-online/awesome-codex-plugins --skill sendsets -g -a cursor -y`
Gemini CLI: `npx skills add hashgraph-online/awesome-codex-plugins --skill sendsets -g -a gemini-cli -y`

## Description

Use Sendsets to turn a software product into useful outbound campaigns, then operate mailboxes, warmup, campaigns, replies, and product integrations through the CLI. Use when the user asks to set up or run cold email with Sendsets or wants campaign ideas grounded in their codebase.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Sendsets

Use the `sendsets` CLI where possible. Ask the CLI for `--json` output, and use `sendsets <command> --help` when flags are unclear.

## First run: understand the product

Read [references/product-discovery.md](references/product-discovery.md). Inspect the customer's codebase and propose five workflows that use the product itself to create something useful for each prospect. Present the ideas before connecting infrastructure or building a campaign. Wait for the user to choose one before making code changes.

## Setup

When the user chooses a workflow or asks to set up Sendsets, read [references/install.md](references/install.md) and [references/authentication.md](references/authentication.md). Install the CLI if needed, authenticate, and run `sendsets doctor --json`. Resolve failed diagnostics before campaign operations. A new workspace may reasonably have no mailbox or app connection yet; report those as setup work for the chosen idea.

## Work by area

- For campaign creation, testing, launch, or management, read [references/campaigns.md](references/campaigns.md). Validate and run preflight before launch.
- For connection, provisioning, warmup, or sender health, read [references/mailboxes.md](references/mailboxes.md) and [references/warmup.md](references/warmup.md) as needed.
- For reading or answering conversations, read [references/replies.md](references/replies.md).
- For product actions, product events, or another tool such as Clay, Firecrawl, or HubSpot, read [references/integrations.md](references/integrations.md).

## Gotchas

The rest: https://github.com/hashgraph-online/awesome-codex-plugins/blob/HEAD/plugins/AddisonHoff/sendsets/skills/sendsets/SKILL.md