Private Infrastructure Cold Email for Enterprise Sales Teams
Scale your B2B outreach with dedicated SMTP servers and complete infrastructure control. Our private cold email infrastructure ensures maximum deliverability, sender reputation protection, and unlimited scaling capacity for enterprise sales teams sending 500k+ emails monthly.
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#1 Private Cold Email Infrastructure
Dedicated Server Infrastructure & IP Management
Most cold email campaigns fail due to shared infrastructure contamination. Mail Karma's private infrastructure eliminates this risk by providing dedicated SMTP servers, isolated IP pools, and complete DNS control. Your sending reputation is protected from other users' bad practices, ensuring consistent 98%+ inbox placement rates across all major ISPs.
Average Cold Email Open Rate
Automated Domain & Mailbox Provisioning
Instantly deploy unlimited cold email domains and mailboxes with automated SPF, DKIM, and DMARC configuration. Our system integrates with your existing cold email platforms (Smartlead, Instantly, Apollo) and automatically provisions new sending infrastructure as your campaigns scale, eliminating manual setup bottlenecks.
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Enterprise Deliverability Monitoring & Optimization
Real-time monitoring of sender reputation across 200+ blacklist databases with automated remediation. Our system tracks inbox placement rates, engagement metrics, and ISP feedback loops, automatically adjusting sending patterns and IP rotation to maintain optimal deliverability performance for your cold outreach campaigns.
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Scale Your Cold Email Operations
With Mail Karma's private infrastructure, you gain complete control over your cold email delivery stack while achieving enterprise-grade reliability. By owning your servers, IPs, and DNS configuration, your sales team can focus on lead generation and conversion without worrying about deliverability issues or infrastructure limitations.
How It Works:
Infrastructure Deployment & Server Setup: We deploy dedicated bare metal servers in premium data centers with your private /24 IP subnet allocation. Complete DNS infrastructure setup includes authoritative nameservers, custom SPF/DKIM/DMARC policies, and reverse DNS configuration optimized for cold email deliverability across all major ISPs.
Domain Provisioning & Email Authentication: Automated domain registration and mailbox creation with enterprise-grade email authentication. The system configures DKIM key rotation, SPF hard-fail policies, and DMARC alignment to maximize sender reputation and prevent email spoofing across your cold outreach campaigns.
IP Warming & Reputation Management: Proprietary IP warming algorithms gradually increase sending volume over 21 days while monitoring blacklist status and engagement metrics. Advanced reputation management includes ISP feedback loop integration, sender score optimization, and automated IP rotation based on performance analytics.
Campaign Integration & SMTP Configuration: Seamless integration with leading cold email platforms through dedicated SMTP credentials and API connections. Support for Smartlead, Instantly, Apollo, and custom sending software with real-time delivery tracking, bounce handling, and engagement analytics across all campaigns.
Ongoing Monitoring & Performance Optimization: 24/7 infrastructure monitoring with real-time alerts for deliverability issues, blacklist incidents, and performance anomalies. Continuous optimization includes sender reputation analysis, ISP-specific delivery pattern adjustments, and proactive remediation to maintain 98%+ inbox placement rates.
Trusted by high-growth companies to scale their outbound campaigns and maximize email deliverability.
FAQs: Everything You’re Wondering About Cold Email Deliverability & MailKarma’s Infrastructure
Private dedicated servers offer completely isolated email infrastructure with pre-warmed IPs exclusively for your campaigns. This eliminates reputation risks from other users and provides maximum deliverability for high-volume enterprise cold email outreach. Gmail Workspace solutions use Google's infrastructure with professional email management, ideal for smaller campaigns and quick deployment. Dedicated servers are recommended for Fortune 500 outreach, financial institutions, and healthcare systems requiring the highest security and deliverability rates.
Our private dedicated email servers cost $150 per server plus $0.001 per email sent, making it extremely cost-effective for high-volume cold email campaigns. For Gmail Workspace solutions, pricing starts at $3.50 per email with a 10-email minimum, dropping to $2.50 per email for volumes over 100 emails. This transparent pricing model ensures you only pay for what you use while maintaining enterprise-grade email deliverability.
Absolutely. MailKarma supports custom tracking domains to improve deliverability and brand consistency. Better yet — we handle the entire setup for you automatically, so there’s zero manual configuration required on your end.
Yes, you can bring your own domain and plug it directly into our warmed IP infrastructure. We’ll handle DNS, email authentication (SPF, DKIM, DMARC), and ensure your domain is fully optimized for inbox placement from day one.
Yes. Any domains you purchase via MailKarma are fully owned by you. We register them in your name, giving you complete control over DNS settings, renewals, and usage — ideal for long-term cold email campaigns and brand consistency.
Yes — MailKarma lets you purchase clean, never-used domains that are fully optimized for cold outreach. Domain setup is included with our infrastructure, which starts at $150/server plus $0.001 per email sent. If you prefer Gmail-style inboxes, pricing starts at $3.50 per inbox (minimum 10 inboxes), and drops to $2.50 each for 100 or more inboxes. All domains come pre-warmed and configured with SPF, DKIM, and DMARC for top-tier deliverability.