
Harden deliverability when security headlines spike
A practical hardening run you can finish this month—patches first, DKIM proof next, then guardrails for device-code phish and token replay—without sinking inbox placement.
29 Oct 2026
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A practical hardening run you can finish this month—patches first, DKIM proof next, then guardrails for device-code phish and token replay—without sinking inbox placement.
29 Oct 2026

Eight Campaign Classic flaws could enable code execution, bypasses and privilege escalation. One, CVE‑2026‑104351, scores 9.9. Patching isn’t optional for marketing stacks.
29 Oct 2026