Inbox Success Guide
Email Deliverability Logic
Sending high-volume email campaigns requires a strategic approach to infrastructure. Learn how to protect your domain reputation and ensure your messages reach the primary inbox.
The Spam Filter Reality
AI Algorithms
Email providers track sending patterns. A sudden spike in volume from one domain triggers "unnatural behavior" flags, causing emails to be throttled or blocked.
Domain Reputation
Your domain carries a reputation score. If your emails are ignored or marked as spam, your score drops across the entire provider network.
The "Rule of 30" Strategy
Limit to 30 emails per day, per sender.
This is the gold standard for cold outreach. Instead of sending 1,000 emails from one account, professionals send 30 emails from multiple different accounts to mimic human behavior.
Infrastructure Scaling
Early Stage
300/day
Growth
1,500/day
Enterprise
3,000+/day
Best Practices
Vary Your Domains
Don't just use multiple accounts on one domain. Use varied TLDs (.io, .com, .net) to spread reputation risk.
Provider Diversity
Mix Google Workspace, Outlook, and specialized SMTP providers to prevent network-wide blacklisting.
Spintax & Personalization
Ensure every email is unique. Use Spintax to vary language and dynamic tags for deep personalization.
Ready to scale safely?
Start building your sender infrastructure today. Our platform handles the rotation logic automatically once you add your providers.