Deliverability
is the floor, not the goal.

Deliverability decides whether anything else matters. A perfect angle sent from an unauthenticated domain at the wrong volume reaches nobody, and the campaign reports a message problem it does not have. These posts cover the mechanical layer: SPF, DKIM and DMARC done properly, how long a domain actually needs to warm up, how many inboxes a given send volume requires, which blacklists are worth watching and which are noise. None of it is clever. All of it is checkable, which is why it is written as checklists rather than advice, and why GrowthPal runs free tools for most of these checks.

Every Deliverability post

GrowthPal publishes 1 deliverability post, listed newest first. Each one states the numbers it relies on and links to the method behind them, so a figure quoted here can be traced to how it was counted rather than taken on trust.

Deliverability

The cold email deliverability checklist

Fifteen deliverability checks in send order, each tied to the RFC or provider rule behind it, and each with a free tool that performs it. No signup required.

Where to go next

The full index carries every GrowthPal post across all categories: all insights. Every number quoted in these posts is counted the way the methodology block describes, and the terms are defined in the outbound glossary.