Email Authentication

SPF, DKIM, DMARC, BIMI. The auth protocols every sender must configure right — explained from the operator side.

BIMI email 2026: the 3 paths to a logo in the inbox

BIMI email setup in 2026: the three paths (self-asserted, CMC, VMC), which inboxes display your logo, the DMARC prerequisite, and whether it pays off.

The Inbox Ledger Team · May 28, 2026 ·13 min read

DMARC monitoring 2026: from RUA reports to enforcement

DMARC monitoring in 2026: how to ingest RUA reports, decode alignment failures, build a weekly triage workflow, and move safely to enforcement.

The Inbox Ledger Team · May 28, 2026 ·13 min read

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