cold-email-deliverability
Installation
SKILL.md
Email Deliverability Review
Review a cold email draft and the setup that sends it - authentication, domain architecture, reputation signals, body structure, legal compliance; return a placement-risk report ordered by what actually decides inbox placement.
Label every claim's provenance:
- provider-verified - mailbox-provider or standards-body documentation.
- vendor - tool-vendor marketing, no independent methodology.
- contested - credible sources disagree.
- practitioner - expert consensus, uncontrolled.
Never present a vendor number as a law. Where evidence does not exist, say so.
The placement hierarchy
Encode this order in every review. It is what most advice in this space gets backwards. Effort below is setup and monitoring time and reversibility, never a price.