Connection Lost
Something went wrong!
Cold Email Infrastructure Calculator
Figure out exactly how many domains and inboxes you need, and what it'll cost.
Your Sending Goals
Recommended: 15-25 for cold outreach to maintain deliverability
Recommended: 2-3 inboxes per domain to avoid reputation issues
Cost Settings
Defaults: $15/year for domains, $5/month for Google Workspace or Microsoft 365 inboxes
What You'll Need
Email Volume
Pro Tips
Start Conservative
Begin with 15-20 emails per inbox per day. You can always increase once you've established good deliverability.
Domain Diversity
Keep 2-3 inboxes per domain maximum. More inboxes per domain increases risk if that domain gets flagged.
Warmup First
New inboxes need 2-3 weeks of warmup before sending cold emails. Factor this into your timeline.
Weekend Sending
B2B emails often perform worse on weekends. Consider 5-day sending unless you're targeting consumers.
Quality Over Quantity
A well-written email to 500 targeted prospects beats 5,000 generic emails. Optimize your list first.
Monitor Bounce Rates
Keep bounce rates under 3%. High bounces hurt your domain reputation quickly.
Ready to Start Sending?
Reachkit handles all of this for you. Domains, inboxes, warmup, and sending.