Inbox Rotation
Spreading cold-email volume across many sending mailboxes so no single inbox exceeds safe daily limits — the way cold email scales without burning domains.
Inbox rotation distributes a campaign's sends across a pool of warmed mailboxes, often on multiple domains, so each individual inbox stays under a conservative daily cap. Since mailbox providers flag any single address that suddenly sends high volume, rotation is how cold email reaches scale horizontally rather than overloading one sender.
A rotation setup pairs with warm-up, authentication, and throttling: each inbox is warmed, sends a modest daily quota, and the platform balances volume across the pool. If one domain's reputation slips, rotation contains the damage to that domain instead of sinking the whole campaign, which is why serious senders treat the inbox pool as core infrastructure.
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