email-deliverability
Installation
SKILL.md
Email Deliverability
Deliverability is decided before you write a word. Domain setup, authentication, volume discipline and list quality determine whether anything reaches an inbox. Copy determines what happens after it arrives.
The most expensive mistake in cold email is sending from the company's primary domain. Reputation damage there affects invoices, support replies, password resets and every conversation with existing customers, and it can take months to undo.
Set up the domain correctly
Never send cold email from your primary domain. Buy separate domains for outbound.
yourcompany.com ← primary. Never send cold outbound from this.
getyourcompany.com ← outbound domain 1
yourcompany.io ← outbound domain 2
tryyourcompany.com ← outbound domain 3