DeliverabilityPopular
Deliverability audit
Cold emails land in spam or reply rates suddenly drop.
You get Ranked problems · Fix plan · Recovery timeline
4 free skills · open source
Claude skills for cold email deliverability
Land in the inbox, not the spam folder: deliverability audits, domain warm-up, SPF, DKIM and DMARC, and safe sending capacity.
- 69 skills
- 14 categories
- Works in 40+ agents
- Human approval built in
Works in
- Claude Code
- Claude.ai
- Codex
- Cursor
- Gemini CLI
- Windsurf
- GitHub Copilot
- Cline
Most useful first
See all 4
The deliverability skills teams install first
DeliverabilityDeliverability auditCold emails land in spam or reply rates suddenly drop.- Ranked problems
- Fix plan
- Recovery timeline
- Monitoring checklist
DeliverabilityDomain warm-up planYou set up new domains or mailboxes for cold email and need a warm-up plan.Open skill
DeliverabilitySending capacity plannerYou need to know how many mailboxes, domains and LinkedIn accounts a meeting target requires, or…Open skill
DeliverabilitySPF, DKIM and DMARC setupYou need to set up or fix SPF, DKIM and DMARC for a sending domain.Open skill
Install
Every skill, one line away
Add the whole library to Claude Code as a plugin, pull a single skill into Codex or Cursor, or download a .zip for Claude.ai. Skills update as the library grows.
- Claude Code
- Claude.ai
- Codex
- Cursor
- Gemini CLI
- Windsurf
- GitHub Copilot
- Cline
/plugin marketplace add prosyo-ai/gtm-skill/plugin install gtm-skills@prosyoInstalls every skill as one plugin and keeps them updated.
npx skills add prosyo-ai/gtm-skillWorks with Claude Code, Codex, Cursor, Gemini CLI, Windsurf and other agents that read SKILL.md files. Add -a codex to target one agent.
Open any skill and download its .zip, then upload it in Claude under Settings, Capabilities, Skills.
Deliverability
All deliverability skills
Domain warm-up plan
You set up new domains or mailboxes for cold email and need a warm-up plan.
You get Setup checklist · Week-by-week ramp · Health gates
Sending capacity planner
You need to know how many mailboxes, domains and LinkedIn accounts a meeting target requires, or how much a team can safely send.
You get Contacts and sends needed · Mailboxes domains and accounts needed · Ramp timeline
SPF, DKIM and DMARC setup
You need to set up or fix SPF, DKIM and DMARC for a sending domain.
You get Sender inventory · Exact DNS records · DMARC rollout plan
No skill for that yet
Try a broader word, clear the filters, or ask for it. Requests shape what we build next.
Global rules
Safe to point at your real inbox and CRM
Every skill follows the same eight rules, and every contribution is reviewed against them before it is published.
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You approve before anything goes out
Skills research, score and draft on their own. Sending, scheduling, deleting and bulk changes wait for your yes.
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Nothing is made up
Every personal line has a source. Customer names and results come only from what you approve.
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Respect for the buyer
Opt-outs honoured everywhere, privacy rules followed, and no creepy references to what someone viewed.
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Your domains stay healthy
Safe sending volumes, ramp gates on bounces and complaints, and no tricks that dodge spam filters.
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Honest numbers
Sample sizes stated, assumptions labelled, and no winners called on noise.
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Works on any stack
Skills describe the work, not a vendor’s buttons, so they run with whatever CRM and tools you use.
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Your data stays yours
No skill sends prospect or customer data anywhere you do not own, and none asks for passwords.
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Judgment, not checklists
Each skill spells out what good looks like and the common mistake, so the output reads like your best rep wrote it.
Open source
Have a play that works? Share it as a skill.
Paste this into Claude, Codex or any agent. It interviews you about your play, writes the skill in the house format, checks it and opens the pull request. Once it is merged, it shows up here with your name on it.
Prompt for your agent
Fetch https://raw.githubusercontent.com/prosyo-ai/gtm-skill/main/AGENTS.md and follow its submission flow. Interview me about my GTM play (the real numbers, rubrics and examples), draft it in their format with reference pages, validate it and open the pull request.
What are Deliverability skills for Claude?
Land in the inbox, not the spam folder: deliverability audits, domain warm-up, SPF, DKIM and DMARC, and safe sending capacity. Each one is a SKILL.md file that teaches an AI agent how a strong operator runs the play, including what good output looks like.
How do I install the Deliverability skills?
In Claude Code, run /plugin marketplace add prosyo-ai/gtm-skill and /plugin install gtm-skills@prosyo to get every skill. For one skill in any agent, run npx skills add prosyo-ai/gtm-skill –skill followed by the skill name shown on its card.
Are these skills free?
Yes. Every skill is free and open source under the MIT license. Use them, change them and share them.
Will an agent send anything without me?
No. The skills research, score and draft freely, and wait for your approval before anything is sent, scheduled or changed in bulk.
Skills draft the play. Penny runs it.
Penny, the Prosyo AI SDR, finds your buyers, writes from what they actually posted, follows up on LinkedIn and email and lands every reply in one inbox with an answer ready. 7 days free, no card.
- 7 days free
- No card required
- Cancel in two clicks
