Calculator

Domain Count Calculator

How many domains do you need total — sending, tracking, backup — across your full operation.

Your setup

30
3300
3
150
Separate domains per clientIsolates reputation
Dedicated tracking domains1 per client
Backup domain pool25% of sending

Domain breakdown

Sending domainsmax 3 inboxes each
10
Client isolationdedicated per client
3
Tracking domainsseparate from sending
3
Backup domainspre-warmed reserve
3
Total domains19

Annual registration cost

$190 – $380

Based on $10–20/domain/year

Critical: Never use your sending domain as your tracking domain. Keep client domains isolated so one bad campaign doesn't contaminate another. Check tracking domain setup before launching.