Resources
Everything here comes from running the infrastructure ourselves — no filler, no farmed content.
SPF, DKIM and DMARC for Cold Email — Records That Actually Pass
The exact SPF, DKIM and DMARC configuration cold email needs: one merged SPF, per-provider DKIM keys, p=none DMARC to start, and the verification step almost everyone skips.
How Many Cold Emails Per Day? The Safe Sending Math
The per-mailbox limit that keeps cold email in the inbox: 8–10 per user per day, and the exact math from daily target to users, domains and cost — with a worked 1,000-a-day example.
Cold Email Infrastructure: The Complete Setup Guide
How to build cold email infrastructure that lands in the inbox: how many domains, users per domain, the exact DNS records, warmup timelines, and Microsoft vs Google vs self-hosted trade-offs.
emailcampaign.ai vs Instantly
Instantly pairs unlimited sending accounts with a big lead database. emailcampaign.ai builds and owns the whole infrastructure lifecycle behind one approval. Where each one genuinely wins.
emailcampaign.ai vs Smartlead
Smartlead is a strong campaign platform with unlimited mailboxes. emailcampaign.ai builds the infrastructure itself — domains, tenants, users, DNS, warmup — behind one approval. An honest side-by-side.