Sending cold emails from your agency's primary website domain is the fastest way to get blacklisted by Google Workspace and Microsoft 365. We build insulated secondary domain fleets, configure hardened SPF, DKIM, DMARC, and MX records, and execute a 21-day algorithmic warmup before any live outreach begins.
How we ensure cold emails land in the primary inbox without risking your agency's daily operational emails.
We register 3–5 brand-adjacent secondary domains (e.g. agencyname-growth.com, agencyname-partners.com) with seamless 301 redirects to your main website. Your primary domain never sends cold emails.
Every domain is configured with strict SPF (Sender Policy Framework), 2048-bit DKIM keys, and a monitoring-grade DMARC policy with custom tracking domains to pass all spam filters.
Inboxes are connected to positive peer-to-peer warmup networks, exchanging automated positive interactions and rescue-from-spam actions to build domain credibility with ESPs before launch.
We strictly limit sending volume to 30–40 emails per inbox per day with randomized intervals. Zero mass blasting, zero spam triggers, and pristine long-term domain health.