Inbox rotation
Also called: Mailbox rotation, Sender rotation
Inbox rotation spreads a campaign’s emails across several sending mailboxes, so each one sends a modest, natural number a day instead of one mailbox sending everything.
How it affects cold email
Volume per mailbox is one of the signals providers watch. Adding mailboxes is safer than pushing one harder, and a problem with one mailbox doesn’t stop the whole campaign.
Keep follow-ups on the mailbox that sent the first email, so the thread makes sense to the recipient.
How Inboxed handles it
- Pick any number of mailboxes for a campaign. Inboxed spreads new leads across them within each one’s daily limit (30 a day by default for a new mailbox), waits a random 60 to 180 seconds between one mailbox’s sends, and sends every follow-up from the mailbox that sent the first email. It can also prefer a mailbox on the recipient’s provider when you turn that on.
Related terms
Sources
Sources checked on 8 November 2026. Rules change, so check the source before you rely on a detail.
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