drumlin.dev

Honest, verifiable tooling for people who check their bills.

Automation you can audit. Every tool here reports what it actually did — what it fetched, what it skipped, and what it charged you for — because the difference between a run that worked and a run that billed you is the whole job.

Tools

Treewalk

Bulk email-authentication auditor — SPF/DKIM/DMARC posture against Gmail/Outlook bulk-sender rules, resolved per RFC 9989.

liveFree (for now)email authSPF/DKIM/DMARCdeliverability