Capacity planning
Cold email calculators for inbox, domain, and SMTP planning.
Estimate infrastructure before provisioning. Every calculator uses the same conservative capacity engine as GTM pricing and keeps outputs framed as planning, not deliverability or pricing guarantees.
Inbox capacity planning
Cold Email Inbox Calculator
Estimate how many cold email inboxes you need from monthly prospects, sequence length, send days, and conservative sending caps.
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Domain capacity planning
Cold Email Domain Calculator
Estimate how many cold email domains you need from target volume, inbox density, and per-domain sending caps.
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SMTP infrastructure planning
SMTP Capacity Calculator
Estimate SMTP inbox, domain, and IP capacity requirements for cold email infrastructure planning.
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Smartlead export planning
Smartlead Inbox Capacity Calculator
Plan how many readiness-gated SMTP inboxes to prepare before exporting accounts into Smartlead.
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Instantly readiness planning
Instantly Inbox Capacity Calculator
Estimate inbox and domain capacity before preparing SMTP inboxes for Instantly workflows.
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Agency workspace planning
Agency Cold Email Capacity Calculator
Plan client workspace inbox, domain, and SMTP capacity for agency cold email programs.
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Domain density planning
Inboxes Per Domain Calculator
Model inbox-per-domain density from send volume, per-inbox caps, and per-domain daily limits before provisioning mailboxes.
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Dedicated IP planning
SMTP IP Capacity Calculator
Estimate how many dedicated SMTP IPs a cold email program needs from monthly volume, send days, and per-IP daily caps.
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Domain rotation planning
Domain Rotation Calculator
Plan how many sending domains keep per-domain cold email volume under conservative daily caps at higher send volumes.
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EmailBison export planning
EmailBison Inbox Capacity Calculator
Plan how many readiness-gated SMTP inboxes and domains to prepare before connecting accounts to EmailBison campaigns.
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Capacity is a planning step.
Actual prospect traffic still needs workspace readiness, fresh DNS/authentication checks, SMTP and IMAP smoke tests, seed-placement evidence, suppression policy, and launch-gate approval.