Your Cold Email Campaign Is Only as Strong as Your Mailbox Infrastructure. Many cold email campaigns fail before the first email is even sent. The problem isn't always the email copy or lead list. Sometimes, the mailbox infrastructure behind the campaign is the real issue. Every cold email operator should focus on these 4 things: 1. Mailbox Quality: Use reliable Google Workspace or Microsoft 365 accounts. 2. Proper DNS Configuration: Make sure SPF, DKIM, and DMARC are correctly configured. 3. Gradual Scaling: Don't increase your sending volume too quickly. Build your sending capacity gradually. 4. Regular Monitoring: Keep an eye on bounce rates, spam complaints, and mailbox health. Remember, simply adding more mailboxes won't automatically improve your results. Properly configured and regularly maintained infrastructure makes the real difference. At Reachoutly, we help cold email agencies build reliable email infrastructure with Google Workspace and Microsoft 365 mailboxes. 👉 How many mailboxes are you currently managing for your outreach campaigns?