Why a glossary
For when the pillar guide is too long, and the spec is too dense.
The deliverability pillar is the long read — RFC syntax, the 6-week IP warmup schedule, the bounce-handler tuning playbook. The glossary is the index card: one-paragraph definition, one paragraph on how AcelleMail handles it, three or four cross-links. Land here from search, leave with a working mental model and a link to whichever deeper page is right.
Every claim on every term page traces back to a source — an RFC paragraph, an AWS doc URL, or a path under /Users/luan/apps/acelle/. If a fact stops being true, it gets fixed at the source registry (resources/glossary/index.php) and the term page reflects the change on next deploy.
