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Sending Domains

Field notes from building outbound systems for B2B teams — infrastructure, research, and the numbers behind both.

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A new sending domain progresses through authentication, reply testing and stable delivery stages toward a healthy inbox

Email Deliverability Latest · March 17, 2026 · 5 min read

Email Warm-Up for New Domains: A Readiness-Based Guide

Email warm-up is a controlled readiness period, not a guarantee of inbox placement. Configure authentication, send real wanted mail, increase gradually and watch the signals.