AUTHOR
Sabo Nagy
Founder & CEO, MailDeckHas built email infrastructure serving 1M+ inboxes across 1,500 clients. Specializes in email infrastructure strictly for high-volume cold outreach.
XPosts by Sabo
What cold email really costs in 2026: inboxes, domains and toolsReal 2026 cold email costs by inbox type: Google $2–3/inbox, Outlook $0.30–0.40, SMTP $0.50–0.99. A 100k/month stack runs about $360 in inboxes.
Cold email infrastructure: the complete setup checklist (and what to automate)The cold email infrastructure checklist: domains, redirects, inboxes, SPF/DKIM/DMARC, tracking, warm-up, rotation, monitoring, and which steps to automate.
How many domains and inboxes do you need for cold email?Inboxes needed = daily sends ÷ the per-inbox rate for your inbox type (Google 15–20, Outlook 3–10, SMTP 11–14). 150k a month takes about 770 inboxes on 59 domains.
Instant domain swap: replace a burned cold email domain without losing a sendWhen a cold email domain burns, the fix usually costs days of lost sends and manual inbox shuffling. Here's the manual process, and how an instant domain swap removes it.
The 3-step cold email sequence we'd send tomorrowA 3-step cold email sequence template: a short intro with one ask, a value-adding follow-up in the same thread, and a polite last touch, plus timing and subject lines.