When VPs of Sales ask about poor outbound performance, deliverability is often the main issue. With a handle on over 2,500 cold email accounts for 120 clients, the author emphasizes that even a single day in spam can cost millions in potential revenue. To combat this, they outline several key strategies. First, they recommend building a solid email infrastructure using Cloudflare for domains and ensuring proper setup of SPF, DKIM, and DMARC records. For sending, Google Workspace and Azure accounts are preferred, maintaining a mix of both to optimize deliverability. Volume management is crucial. The author suggests targeting approximately 7,500 prospects monthly from a total addressable market of 30,000 companies, which translates to 20-25 Google inboxes and up to 500 Azure accounts. Email sending should start slowly, ramping up to 35-40 emails per day for Google accounts after a few weeks, while Azure accounts can increase more quickly. The tech stack also influences success; the author recommends PlusVibe for email warm-up and sending, highlighting the importance of dedicated residential IPs to avoid spam issues. Best practices include avoiding spam words and rotating inboxes every couple of months to maintain high deliverability rates. Content should be randomized using spyntax, and copy should be refreshed every three months. Tracking open rates and click-through rates is discouraged in favor of focusing on reply and lead rates. Lastly, maintaining inbox health requires regular manual checks to ensure messages aren’t landing in spam. The author stresses that while deliverability gets emails into inboxes, a clean workflow is essential for meaningful conversations.