Nikita Stoletov
CTO | Outbound Infrastructure & Deliverability Engineering
CTO designing cold email infrastructure and outbound systems at scale. Built and managed infrastructure delivering over 50M emails monthly across 1,200+ domains with 98% inbox placement.
MailDeck · Enterprise Email Infrastructure
ARTICLES BY NIKITA STOLETOV
Guide
Cold Email at Scale: What Happens After 100K Emails/Month
10-20% of domains burn monthly at enterprise scale. We share the metrics, thresholds, and rotation strategies from managing 650K+ Outlook inboxes across 1,500+ ...
Mar 24, 2026
13 min read
Guide
Cold Email Domain Rotation: When and How to Rotate Sending Domains
10-20% of cold email domains burn monthly at scale. Complete domain rotation strategy with specific thresholds, timelines, and recovery protocols based on data ...
Apr 06, 2026
17 min read
Guide
SPF, DKIM, DMARC for Cold Email: The Complete DNS Setup Guide with Error Analysis
We audited DNS records of 1,000+ cold email domains. 67% had SPF errors. Complete setup guide with the 10 most common mistakes and how to fix them.
Mar 31, 2026
13 min read