Security & Infrastructure9 Sept 2026
Google and Yahoo 2026 Inbox Deliverability Rules: What Vacation Rental Operators Must Know
Mandatory DMARC enforcement and strict spam rate thresholds (<0.1%) are now causing automated booking confirmations to land in guest spam folders across unauthenticated hospitality domains.
Key Takeaway:
• Unauthenticated domains sending >50 emails daily now experience aggressive spam filtering.
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