SKILL-022 Emails and notifications Locked skill

Deliverability basics

Deliverability is earned at the domain level: pass SPF, DKIM, and DMARC, then stop sending to addresses that bounce or complain.

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What this skill helps you build

Authenticate your domain and handle bounces so your transactional mail reaches the inbox instead of spam.

The production takeaway

Deliverability is earned at the domain level: pass SPF, DKIM, and DMARC, then stop sending to addresses that bounce or complain.

02

Inside this skill

The full skill expands these implementation areas with decisions, edge cases, prompts, tests, and framework-specific code.

Emails and notifications
What this helps you build

A sending setup that actually lands in the inbox. You'll configure the three DNS records every mailbox provider checks — SPF , DKIM , and DMARC — on a proper sending domain, and wi

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Emails and notifications
When to use this

Set this up the moment your app sends real mail to real people from your own domain. Concretely, you need it when you have: Transactional email password resets, receipts, magic lin

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Emails and notifications
The core idea

Mailbox providers don't trust you ; they trust your domain's reputation , and they only measure it once they can prove the mail really came from your domain. That proof is three DN

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03

Unlock the full implementation

Paid access includes the complete skill body, implementation prompt, common mistakes, production checklist, and code examples where this skill includes them.