DMARC quarantine policy explained - how to move from p=none to quarantine to reject without losing legitimate mail, reading rua reports, and using pct.
Email domain rotation explained - the real math behind spreading cold-email volume across domains and inboxes to protect reputation without multiplying risk.
Subdomain vs separate domain for cold email - reputation isolation, brand and legal risk, and which sending setup to pick by team type, explained for 2026.
Sending more cold email to hit pipeline goals is the fastest way to kill your domain. The volume trap, the math, and the way out.
