Bulk senderrequirements
Rules from large mailbox providers for anyone sending high volumes of email.
Growth Score · Capital & Scale
Definition
What it means
Since 2024, Google and Yahoo have required bulk senders to authenticate with SPF, DKIM and DMARC, offer one-click unsubscribe and keep complaint rates low. Others have followed similar rules.
Non-compliant mail risks being blocked.
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FAQ
Quick answers
What is Bulk sender requirements?
Rules from large mailbox providers for anyone sending high volumes of email.
Where does it sit in Growth Score?
It belongs to the Capital & Scale pillar, one of the 12 pillars your score is built from.
What should I read next?
Start with Email authentication and List-Unsubscribe header, then browse the other terms in Capital & Scale.
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