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What the CNIL says about B2B, and what it no longer says

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No email benchmark has a primary source

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The open rate died in June 2021

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One-click unsubscribe is a protocol, not a button

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Your DKIM key may be fifteen years old

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SPF: ten DNS lookups, not eleven

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DMARC changed status in May 2026

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Microsoft backed down six days before the deadline

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Yahoo refuses to publish its threshold, and that is information

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The only number that decides: 0.30 percent

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