Cold Email Volume Calculator
Enter your target daily sending volume. We'll calculate the domains, mailboxes, and warm-up timeline you need.
Your Infrastructure Needs
Domains needed
5
Total mailboxes
10
Warm-up period
3 weeks
Monthly domain cost
~$50
Need help setting this up?
Sales.co automates domain setup, mailbox provisioning, warm-up, and sending — all from one dashboard.
How This Calculator Works
The cold email volume calculator divides your target daily volume by the per-mailbox limit to determine how many mailboxes you need. It then divides by mailboxes-per-domain to get domain count. The warm-up period is estimated at 2–4 weeks depending on volume.
The standard recommendation is 50–100 emails per mailbox per day with 2–3 mailboxes per domain. Going above these limits significantly increases your risk of landing in spam or getting your domain blacklisted.