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How Many Domains Do You Need for Cold Email?

Tool demo · Inbox Planner

A short walkthrough of the free WarmInboxes inbox planner: work out the domains and inboxes a sending volume needs at a safe daily pace per inbox.

Inbox Planner

Target volume in, exact domains and inboxes needed out, with a safe ramp-up plan.

Run the Inbox Planner → Free, no account.

Prewarmed & Fresh Inboxes

Google, Microsoft 365 and Azure inboxes with free prewarmed domains and DNS configured before you log in. Prewarmed inboxes send the day they land; every order is delivered within 48 to 72 hours.

Get Prewarmed & Fresh Inboxes