Cold Email Infrastructure Calculator

Cold Email Cost Calculator

Developed by Rihanoor Protik

Estimate the domains, inboxes, sending capacity, and total cost required for your cold email campaign.

Campaign Parameters
Unique Prospects
1 follow-up (2 total emails/lead)
Recommended
Volume-based duration
Estimated Total Cost
$133
For 1,000 leads • 2,000 emails (Max: 1,200 leads / 2,400 emails)
Cost Per Lead $0.13
Cost Per 1,000 Leads $133.00
Cost Share Distribution 100%
Domains
Google
Outlook
Verification
Sending
Required Infrastructure
Google Workspace
2 domains
8 inboxes
Outlook / Microsoft
3 domains
12 inboxes
Sending Capacity Benchmarks
Active Sending Days 12 days
Per Inbox Capacity 120 emails
Per Domain Capacity (4 inboxes) 480 emails
Setup Highest Max Leads 1,200 leads
Setup Highest Max Emails 2,400 emails
Itemized Expense Breakdown
Line Item Total Cost
Domains
5 domains × $11
 $55
Google Workspace
8 accounts × $3 × 1 month
 $24
Outlook
12 accounts × $4 × 1 month
 $48
Email Verification
1 × 1K block × $2
 $2
Email Sending
2 × 1K blocks × $2
 $4
Total Cost
 $133

This calculator models infrastructure and operational expenses using fixed deliverability rules:

  • Domain Setup: Every domain costs $11 one-time and contains exactly 4 email accounts. No mixing of Google and Outlook within a domain.
  • Sending Capacity: Each inbox sends 10 cold emails per sending day (includes initials + follow-ups).
  • Setup Highest Max Capacity: Highest Max Emails = Total Domains × Domain Capacity. Highest Max Leads = Max Emails / (Follow-ups + 1).
  • Duration Locks: ≤2k emails restricts options to 1 month. 2k–6k emails unlocks 2 months. >6k emails unlocks 3 months.
  • Sending Days: 1 month = 12 days; 2 months = 32 days; 3 months = 53 days (based on 5 days/week after 15-day warmup).
  • Provider Split (~50/50): Google = FLOOR(Total Domains / 2); Outlook = CEILING(Total Domains / 2). Outlook receives the extra domain when total is odd.
Est. Total Cost $133