Cold Email Infrastructure: The Complete Guide to Scaling Safely

Cold Deliverability Infrastructure: The Complete Guide to Scaling Safely (multi-channel outreach)

Most cold email campaigns fail not because of bad copy or poor targeting, but because the infrastructure supporting them isn't built to handle scale. Without proper infrastructure, your emails land in spam, your domains get blacklisted, and your deliverability craters — often permanently.

In this comprehensive guide, you'll learn what cold Deliverability Infrastructure actually is, why it matters for teams that need to scale, and how to build it properly. Whether you're sending 100 emails per day or 10,000 per month, the principles remain the same: infrastructure comes first.

Key Facts: Cold Deliverability Infrastructure (multi-channel outreach)

Main takeaway: Cold Deliverability Infrastructure is the technical foundation that ensures your emails actually reach prospects' inboxes at scale, not just the automation layer that sends them. Learn more about multi-channel outreach.

Key statistic: Teams without proper infrastructure see deliverability rates drop from 95% to under 50% within 3-6 months of scaling, while teams with infrastructure-first setups maintain 90%+ inbox placement rates.

Best practice: Separate your infrastructure (domains, inboxes, Deliverability Infrastructure, monitoring) from your platform tools (sequences, templates, automation). Infrastructure protects you; platforms execute your strategy.

Who needs it: Any team sending more than 50-100 cold emails per day, using multiple inboxes or domains, or planning to scale beyond a few hundred emails per month.

What Is Cold Deliverability Infrastructure?

Cold Deliverability Infrastructure is the technical foundation that makes scalable outbound possible. It's everything that happens before your email hits the "send" button — and everything that ensures it actually reaches the inbox.

Unlike email automation platforms (which help you write sequences and schedule sends), infrastructure focuses on:

• Domain and inbox management (rotation, reputation protection)
• Email authentication (SPF, DKIM, DMARC setup)
• Deliverability Infrastructure and reputation building (gradual volume increases)
• Deliverability monitoring (Deliverability Infrastructure, bounce handling)
• Scale safeguards (volume limits, provider distribution)

Think of it this way: if your email platform is the engine of your outbound car, infrastructure is the road, fuel system, and safety features that get you where you're going without breaking down.

Infrastructure vs. Platform: The Critical Difference

Most cold multichannel outbound platforms focus on the platform layer: sequences, templates, personalization, and automation. These are important, but they're only half the equation.

Platform tools help you:

• Write and sequence emails
• Personalize at scale
• Automate follow-ups
• Track opens and replies

Infrastructure ensures you can:

• Send from multiple inboxes without burning domains
• Scale volume without triggering spam filters
• Maintain deliverability over months and years
• Recover quickly when issues arise

The problem: most teams buy a platform tool and assume infrastructure is included. It usually isn't. When they try to scale, deliverability crashes, and they're left wondering why their "great multichannel outbound platform" stopped working.

Why Cold Deliverability Infrastructure Matters

1. Deliverability Protection at Scale

Without infrastructure, here's what happens when you scale:

Month 1: You send 50 emails/day from one Gmail account. Everything works. Open rates are good. Replies are coming in.

Month 3: You've grown to 200 emails/day from the same account. Gmail starts throttling you. More emails land in spam.

Month 6: You've hit 500 emails/day. Gmail suspends your account. Your domain reputation is damaged. You start over with a new account, and the cycle repeats.

With proper infrastructure (multiple inboxes, Deliverability Infrastructure, Domain Warming), you can scale to 10,000+ emails per month while maintaining 90%+ inbox placement rates.

2. Domain and Account Protection

Every email you send affects your domain reputation and account standing. One bad campaign can:

• Get your domain blacklisted
• Trigger permanent account suspensions
• Damage your brand's email reputation
• Cost thousands in lost opportunities

Infrastructure protects you through:

• Deliverability Infrastructure: Spread sending across multiple domains
• Deliverability Infrastructure: Distribute volume across many accounts
• Volume limits: Automated caps per inbox/domain
• Monitoring: Early detection of reputation issues

3. Compliance and Legal Safety

Cold Deliverability Infrastructure also helps you stay compliant with CAN-SPAM, GDPR, and other regulations:

• Unsubscribe handling: Automatic capture and processing
• Bounce management: Proper handling of invalid addresses
• Audit trails: Records of consent, opt-outs, and sends
• Data retention: Secure storage and deletion policies

4. Cost Efficiency

Teams without infrastructure waste money on:

• Constantly replacing burned domains and accounts
• Lost opportunities from poor deliverability
• Time spent manually managing inboxes
• Failed campaigns that need to be rebuilt

Infrastructure pays for itself by preventing these problems.

Core Components of Cold Deliverability Infrastructure

1. Domain Management and Rotation

What it is: Using multiple sending domains to distribute email volume and protect your primary domain's reputation.

Why it matters: Sending all emails from one domain concentrates reputation risk. If that domain gets flagged, everything stops. Deliverability Infrastructure spreads risk and lets you isolate problems.

How it works:

• Set up multiple domains (main domain + 2-5 sending domains)
• Configure each with SPF, DKIM, and DMARC
• Rotate sending across domains automatically
• Monitor reputation for each domain separately

Best practices:

• Use dedicated sending domains, not your primary brand domain
• Age domains before heavy sending (Deliverability Infrastructure period)
• Keep domain-to-inbox ratios reasonable (1 domain per 2-3 inboxes)
• Use different domain extensions (.com, .io, .co) to avoid patterns

2. Deliverability Infrastructure

What it is: Distributing email volume across multiple email accounts (inboxes) to avoid per-account limits and protect individual account standing.

Why it matters: Email providers (Gmail, Outlook, etc.) have per-account sending limits. Hit those limits, and your account gets throttled or suspended. Deliverability Infrastructure keeps you under limits while scaling volume.

How it works:

• Connect multiple inboxes (5, 10, 20+ depending on volume)
• Distribute sends evenly across inboxes
• Set per-inbox volume limits (e.g., 30-50 emails/day for Gmail)
• Automatically pause problematic inboxes

Best practices:

• Use real, warmed email accounts (Google Workspace, Outlook)
• Mix provider types (Gmail, Outlook, custom domains)
• Monitor each inbox's health separately
• Replace underperforming inboxes proactively

3. Deliverability Infrastructure

What it is: Gradually increasing email volume from new domains and inboxes to build positive sender reputation before full-scale sending.

Why it matters: Sending high volumes immediately from a new domain/inbox looks like spam to email providers. Deliverability Infrastructure mimics human behavior and builds trust.

How it works:

• Start with 1-2 emails/day from a new inbox
• Gradually increase to 10, 20, 30+ emails/day over 4-8 weeks
• Mix in replies and engagement (via Deliverability Infrastructure networks)
• Monitor for bounces, spam complaints, and blocks

Best practices:

• Warm up for at least 4 weeks before full volume
• Use automated Deliverability Infrastructure services or networks
• Ensure Deliverability Infrastructure emails look natural (varied content, timing)
• Continue Deliverability Infrastructure even after reaching target volume

4. Email Authentication (SPF, DKIM, DMARC)

What it is: DNS records that verify your emails are legitimate and authorized to send from your domains.

Why it matters: Without proper authentication, email providers treat your emails as suspicious or spam. Authentication is non-negotiable for deliverability.

How it works:

• SPF (Sender Policy Framework): Lists authorized sending servers
• DKIM (DomainKeys Identified Mail): Cryptographically signs emails
• DMARC (Domain-based Message Authentication): Policy for handling failed authentication

Best practices:

• Set up all three (SPF, DKIM, DMARC) for every domain
• Use DMARC policies starting with "none" and move to "quarantine" then "reject"
• Monitor authentication pass rates
• Update records when adding new sending infrastructure

5. Deliverability Monitoring and Diagnostics

What it is: Real-time tracking of where your emails land (inbox vs. spam) and why, across different email providers.

Why it matters: You can't fix deliverability problems you don't know about. Monitoring catches issues early and guides optimization.

How it works:

• Deliverability Infrastructure: Send test emails to seed accounts and check inbox/spam placement
• Reputation monitoring: Track domain/IP scores, blacklist status
• Bounce analysis: Categorize and handle bounces automatically
• Spam trap detection: Identify and remove trap addresses

Best practices:

• Test placement weekly across Gmail, Outlook, Yahoo
• Monitor reputation scores (Sender Score, Google Postmaster)
• Set up alerts for sudden deliverability drops
• Review bounce and complaint rates daily

6. Bounce and Complaint Handling

What it is: Automated processing of email bounces (delivery failures) and spam complaints to protect your reputation.

Why it matters: High bounce rates and spam complaints damage reputation and can trigger blocks. Proper handling keeps these rates low.

How it works:

• Bounce categorization: Hard bounces (permanent) vs. soft bounces (temporary)
• Automatic suppression: Remove hard bounces from lists immediately
• Complaint processing: Unsubscribe complainants and flag patterns
• Volume throttling: Reduce sending to domains with high bounce rates

Best practices:

• Remove hard bounces immediately (never retry)
• Suppress complainants permanently
• Monitor bounce rates per domain/inbox (keep under 2%)
• Investigate sudden bounce rate increases

Platform Tools: The Infrastructure Problem

Understanding how different email automation platforms handle infrastructure is critical for building scalable outbound.

Email Automation Platforms (The Sequencing Layer)

Email automation platforms help you execute your cold email strategy:

• Write and sequence emails
• Personalize messages at scale
• Automate follow-ups and workflows
• Track opens, clicks, and replies
• Manage contact lists

Examples: SuperSend, Lemlist, Instantly, Smartlead, Outreach.io

The key difference: How they handle infrastructure.

The Problem: Infrastructure Fragmentation

Most email automation platforms (Lemlist, Instantly, Smartlead) focus on the sequencing and automation layer, but they handle infrastructure differently:

Inbox Management:

• Most platforms require you to get email inboxes from third-party providers (Google Workspace, Outlook, etc.) and connect them
• You manage inbox procurement and setup separately
• Some platforms may offer inbox purchasing, but it's often just reselling third-party services

Deliverability Infrastructure:

• Lemlist, Instantly: Offer Domain Warming as a paid add-on service
• Smartlead: Includes Domain Warming in the platform (no extra charge)
• SuperSend: Includes Deliverability Infrastructure in the platform (no extra charge)

The reality: Even when platforms include Deliverability Infrastructure (like Smartlead and SuperSend), they often don't provide native inbox management. You're still purchasing inboxes from third parties and managing those relationships separately. The infrastructure experience remains fragmented across multiple tools and vendors.

The Hidden Cost of Fragmented Infrastructure

When you use platforms that don't provide native infrastructure management:

• Fragmented workflow: Manage sequences in one tool, purchase inboxes elsewhere, monitor separately
• Integration complexity: Connect multiple services that may not play well together
• Higher costs: Platform fee + Deliverability Infrastructure add-on fees (for some platforms) + inbox costs + domain costs + Deliverability Infrastructure service fees (if not included)
• Limited control: Can't optimize infrastructure for your specific needs when it's spread across vendors
• Support challenges: Problems? Figure out which vendor is responsible (platform, inbox provider, Deliverability Infrastructure service)

Note: Some platforms include Deliverability Infrastructure (Smartlead, SuperSend), while others charge extra (Lemlist, Instantly). But inbox procurement and management still typically require third-party relationships.

The Solution: Platform + Native Infrastructure

SuperSend is an email automation platform (like Lemlist, Instantly, Smartlead) that provides native infrastructure management. Here's how SuperSend compares:

Deliverability Infrastructure:

• SuperSend: Included (no extra charge) ✅
• Smartlead: Included (no extra charge) ✅
• Lemlist, Instantly: Paid add-on ⚠️

Inbox Management:

• SuperSend: Purchase and manage inboxes directly in the platform (native) ✅
• Competitors: Typically require third-party inbox procurement (Google Workspace, Outlook, etc.) and connection ⚠️

Infrastructure Integration:

• SuperSend: Native domain and Deliverability Infrastructure, integrated deliverability monitoring, unified billing and support (all in one place) ✅
• Competitors: Even when Deliverability Infrastructure is included, inbox procurement and domain management often remain separate tools/services ⚠️

The difference: SuperSend provides the same powerful sequencing capabilities as other platforms, plus native infrastructure management—including inbox purchasing and management—all integrated in one platform. No juggling multiple vendors for infrastructure components.

Why Native Infrastructure Matters

When infrastructure is native to your platform:

• Better integration: Infrastructure and sequencing work together seamlessly
• Optimized performance: Infrastructure is tuned for your specific sending patterns
• Single point of support: One team handles both platform and infrastructure issues
• Cost efficiency: Often more affordable than platform + multiple third-party services
• Full control: Adjust infrastructure settings based on your campaign performance

How to Build Cold Deliverability Infrastructure: Step-by-Step

Step 1: Assess Your Current Setup

Before building infrastructure, understand what you have:

• How many emails are you sending per day/month?
• How many inboxes/domains are you using?
• What's your current deliverability rate?
• Have you had any account suspensions or domain issues?

This baseline helps you determine infrastructure needs.

Step 2: Set Up Multiple Domains

If you're sending from a single domain, that's your first risk point.

Actions:

1. Purchase 2-5 additional domains for sending (separate from your primary brand domain)
2. Set up DNS records (SPF, DKIM, DMARC) for each domain
3. Age domains for 30+ days before heavy sending
4. Use different domain extensions to avoid patterns

Cost: ~$50-100/year for domains + DNS setup time

Step 3: Acquire and Warm Up Inboxes

You'll need multiple inboxes to distribute volume.

Actions:

1. Set up 5-20 email inboxes (Google Workspace, Outlook, or custom domains)
2. Use real accounts, not burner emails
3. Warm up each inbox for 4-8 weeks before full volume
4. Gradually increase from 1-2 emails/day to target volume

Cost: ~$6-12/month per Google Workspace inbox, ~$5/month per Outlook inbox

Options for infrastructure:

• Manual setup: Purchase inboxes directly from providers, warm up manually or use separate Deliverability Infrastructure services (Mailwarm, Warmbox) - requires managing multiple tools
• Platform with native infrastructure: Use a platform like SuperSend where you can purchase and manage inboxes directly in the platform with built-in Deliverability Infrastructure - everything in one place
• Platform + third-party infrastructure: Use a platform tool that directs you to third parties for inboxes and Deliverability Infrastructure (common with most email automation platforms) - fragmented but possible

Step 4: Configure Email Authentication

Every domain needs proper authentication.

Actions:

1. Set up SPF records listing authorized sending servers
2. Configure DKIM signing for each domain
3. Create DMARC policies (start with "none," move to "quarantine")
4. Test authentication with tools like MXToolbox

Time: 1-2 hours per domain

Step 5: Implement Rotation Logic

Set up automated rotation across domains and inboxes.

Actions:

1. Configure Deliverability Infrastructure (distribute sends evenly)
2. Set up Deliverability Infrastructure (spread volume across accounts)
3. Define per-inbox volume limits (e.g., 30-50/day for Gmail)
4. Automate pause/resume for problematic accounts

Tools: Infrastructure platforms handle this automatically, or build custom rotation logic

Step 6: Set Up Monitoring

You need visibility into deliverability and reputation.

Actions:

1. Configure Deliverability Infrastructure (weekly tests to Gmail, Outlook, Yahoo)
2. Monitor domain/IP reputation scores
3. Set up alerts for deliverability drops
4. Track bounce and complaint rates daily

Tools: Google Postmaster Tools, Sender Score, Deliverability Infrastructure tools

Step 7: Automate Bounce and Complaint Handling

Manual handling doesn't scale.

Actions:

1. Set up automatic hard bounce suppression
2. Configure complaint processing (unsubscribe + flag)
3. Implement volume throttling for high-bounce domains
4. Create alerts for sudden rate increases

Step 8: Establish Maintenance Routines

Infrastructure requires ongoing maintenance.

Weekly:

• Review deliverability metrics
• Check placement test results
• Monitor bounce/complaint rates

Monthly:

• Audit domain and inbox health
• Replace underperforming inboxes
• Review and update authentication records
• Analyze volume distribution

Quarterly:

• Evaluate infrastructure scaling needs
• Review and optimize rotation logic
• Update Deliverability Infrastructure strategies
• Assess costs vs. performance

Common Cold Deliverability Infrastructure Mistakes

Mistake 1: Sending from Your Primary Brand Domain

The problem: If your primary domain gets flagged, everything stops — including transactional emails, marketing emails, and customer communications.

The solution: Use dedicated sending domains for cold email, keep your brand domain clean.

Mistake 2: Ignoring Deliverability Infrastructure

The problem: Sending high volumes immediately from new domains/inboxes triggers spam filters and damages reputation from day one.

The solution: Always warm up new domains and inboxes for 4-8 weeks before full-scale sending.

Mistake 3: Single Point of Failure

The problem: Relying on one domain or one inbox means one problem takes everything down.

The solution: Always use multiple domains and inboxes with automatic rotation and failover.

Mistake 4: No Monitoring

The problem: You don't know about deliverability problems until it's too late — when open rates crash or accounts get suspended.

The solution: Set up real-time monitoring for placement, reputation, bounces, and complaints.

Mistake 5: Poor Bounce Handling

The problem: Retrying hard bounces or ignoring complaints damages reputation and can trigger blocks.

The solution: Automatically suppress hard bounces immediately and process complaints properly.

Mistake 6: Scaling Too Fast

The problem: Increasing volume too quickly without infrastructure expansion triggers provider limits and reputation issues.

The solution: Scale infrastructure (more inboxes/domains) before scaling volume. Maintain healthy volume-to-infrastructure ratios.

Mistake 7: Treating Infrastructure as Optional

The problem: Viewing infrastructure as "nice to have" instead of foundational means you'll hit scaling walls and deliverability problems.

The solution: Build infrastructure from day one if you plan to scale. It's cheaper and easier than fixing problems later.

Infrastructure at Scale: For Teams and Agencies

When you're managing outbound for multiple clients or large teams, infrastructure complexity multiplies.

Multi-Client Infrastructure

Challenge: Each client needs separate infrastructure to avoid reputation cross-contamination.

Solution:

• Dedicated domains and inboxes per client
• Separate Deliverability Infrastructure and monitoring per client
• Client-level isolation in your infrastructure platform
• Automated provisioning for new clients

Team Infrastructure

Challenge: Multiple team members need to send without conflicting or burning shared resources.

Solution:

• Role-based access to inbox pools
• Per-user volume limits and monitoring
• Team-level analytics and reporting
• Centralized infrastructure management

High-Volume Infrastructure

Challenge: Sending 50,000+ emails per month requires significant infrastructure scaling.

Solution:

• 20-50+ inboxes distributed across providers
• 5-10+ domains for rotation
• Automated scaling (add inboxes/domains as volume grows)
• Provider diversity (Gmail, Outlook, custom domains)

Cost Management

Challenge: Infrastructure costs scale with volume (more inboxes = more monthly costs).

Solution:

• Optimize inbox-to-volume ratios
• Use cost-effective providers where appropriate
• Monitor infrastructure ROI (deliverability vs. cost)
• Consider infrastructure platforms with volume-based pricing

How SuperSend Helps: Platform + Native Infrastructure

SuperSend is a full-featured email automation and sequencing platform—like Lemlist, Instantly, or Smartlead—but with a critical difference: we provide native infrastructure management instead of sending you to third parties.

Complete Email Automation Platform

SuperSend includes all the sequencing and automation features you expect:

• Sequences: Build multi-step email sequences with personalization
• Templates: Create and reuse email templates across campaigns
• Automation: Conditional branches, A/B testing, behavioral routing
• Tracking: Opens, clicks, replies, engagement analytics
• Multi-channel: Email + LinkedIn + Twitter in unified sequences
• AI personalization: Smart message builder and reply analyzer

Native Infrastructure (Not Outsourced)

Unlike competitors who resell third-party infrastructure services, SuperSend provides native infrastructure management:

Purchase and Manage Inboxes Directly:

• Buy email inboxes through SuperSend's platform
• No need to set up Google Workspace or Outlook separately
• Unified billing and account management
• Infrastructure optimized for your sending patterns

Built-In Infrastructure Features:

• Domain and Deliverability Infrastructure: Automated rotation across all resources
• Native Deliverability Infrastructure: Built-in Deliverability Infrastructure for all connected inboxes (included, no extra charge - unlike Lemlist and Instantly which charge for Deliverability Infrastructure as an add-on)
• Deliverability monitoring: Real-time Deliverability Infrastructure and reputation tracking
• Bounce and complaint handling: Automatic suppression and processing
• Per-inbox volume limits: Automated throttling to protect reputation
• Workspace isolation: Separate infrastructure per client/workspace

Infrastructure at Scale:

• Multi-inbox, multi-domain operations built-in
• Client/workspace isolation for agencies
• Team-level access controls and limits
• High-volume infrastructure management
• Automated scaling as volume grows

The SuperSend Difference

Deliverability Infrastructure Comparison:

• SuperSend: Domain Warming included ✅ (no extra charge)
• Smartlead: Domain Warming included ✅ (no extra charge)
• Lemlist: Deliverability Infrastructure available as paid add-on ⚠️
• Instantly: Deliverability Infrastructure available as paid add-on ⚠️

Infrastructure Management:

• SuperSend:

  • Platform: ✅ Powerful sequencing and automation
  • Deliverability Infrastructure: ✅ Included (no extra charge)
  • Inbox management: ✅ Purchase and manage inboxes natively in platform
  • Result: ✅ Everything in one place, optimized to work together

• Competitors (Lemlist, Instantly, Smartlead):

  • Platform: ✅ Powerful sequencing and automation
  • Deliverability Infrastructure: ✅ Included (Smartlead) or ⚠️ Paid add-on (Lemlist, Instantly)
  • Inbox management: ❌ Require third-party inbox procurement (Google Workspace, Outlook, etc.) and connection
  • Result: ⚠️ Fragmented - Deliverability Infrastructure may be included, but inbox management still requires separate vendors

The Key Difference: SuperSend provides native inbox purchasing and management directly in the platform, eliminating the need to procure inboxes from third-party providers. You get the same powerful sequencing capabilities as other platforms, plus truly integrated infrastructure management—not just connected through APIs or outsourced to third parties.

Why This Matters

When infrastructure is native (not outsourced):

• Better performance: Infrastructure tuned for your specific campaigns
• Simpler workflow: No juggling multiple tools and logins
• Faster problem resolution: One support team for platform + infrastructure
• Cost efficiency: Often less expensive than platform + multiple third-party services
• Full control: Adjust infrastructure based on your actual sending patterns

Ready to try a platform with native infrastructure? Start your free SuperSend trial and see the difference.

Frequently Asked Questions

How many inboxes do I need for cold Deliverability Infrastructure?

Answer: It depends on your volume:

• 50-200 emails/day: 3-5 inboxes
• 200-500 emails/day: 5-10 inboxes
• 500-1,000 emails/day: 10-20 inboxes
• 1,000+ emails/day: 20-50 inboxes

General rule: plan for 30-50 emails per inbox per day for Gmail/Outlook accounts.

How long does Deliverability Infrastructure take?

Answer: Proper Deliverability Infrastructure takes 4-8 weeks:

• Weeks 1-2: 1-5 emails/day
• Weeks 3-4: 5-15 emails/day
• Weeks 5-6: 15-30 emails/day
• Weeks 7-8: 30-50 emails/day (full volume)

Faster Deliverability Infrastructure risks reputation damage. Slower is safer.

Can I use one domain for all my cold emails?

Answer: Technically yes, but it's risky. If that domain gets flagged, everything stops. Using 2-5 sending domains spreads risk and protects your primary brand domain. For high-volume sending (1,000+ emails/month), multiple domains are essential.

What's the difference between Deliverability Infrastructure and sending?

Answer: Deliverability Infrastructure is the gradual reputation-building period before full-scale sending. During Deliverability Infrastructure, you send low volumes (1-50 emails/day) to build positive sender reputation. After Deliverability Infrastructure, you send at full volume (hundreds or thousands per day) with established reputation.

How do I know if my infrastructure is working?

Answer: Monitor these metrics:

• Inbox placement rate: Should be 85%+ (ideally 90%+)
• Bounce rate: Should be under 2%
• Spam complaint rate: Should be under 0.1%
• Domain reputation: Check Google Postmaster, Sender Score
• Account health: No suspensions or throttling

Do I need infrastructure if I'm only sending 50 emails per day?

Answer: At 50 emails/day, basic infrastructure (single domain, single inbox, basic Deliverability Infrastructure) might be sufficient. But if you plan to scale beyond 100-200 emails/day, build proper infrastructure from the start. It's easier and cheaper than fixing problems later.

How much does cold Deliverability Infrastructure cost?

Answer: Infrastructure costs scale with volume:

• Small (50-200 emails/day): $30-60/month (3-5 inboxes) + platform fee + Deliverability Infrastructure service fee
• Medium (200-500 emails/day): $60-120/month (5-10 inboxes) + platform fee + Deliverability Infrastructure service fee
• Large (500-1,000 emails/day): $120-240/month (10-20 inboxes) + platform fee + Deliverability Infrastructure service fee
• Enterprise (1,000+ emails/day): $240+/month (20+ inboxes) + platform fee + Deliverability Infrastructure service fee

Plus domain costs (~$10-15/year per domain).

With native infrastructure platforms (like SuperSend): Infrastructure costs are typically integrated into the platform pricing, often resulting in lower total costs than piecing together platform + inboxes + Deliverability Infrastructure separately.

Related Articles

• What Email Provider Should You Use for Cold Emails?
• Domain Warming: Scale Safely Without Burning Your Domain
• Deliverability Infrastructure Guide
• Multi-Channel Outreach Guide
• How to Send Cold Emails Without Getting Blocked

Ready to Build Infrastructure That Scales?

Cold Deliverability Infrastructure isn't optional if you want to scale safely. Without it, you'll hit deliverability walls, burn domains, and waste time fixing problems that infrastructure would have prevented.

SuperSend is a full-featured email automation platform (sequences, templates, personalization, automation) with native infrastructure management built in. Instead of directing you to third parties for inboxes and Domain Warming services, SuperSend lets you purchase and manage infrastructure directly in the platform. You get powerful sequencing capabilities plus Deliverability Infrastructure, inbox rotation, automated Domain Warming, deliverability monitoring, and bounce handling—all in one unified platform.

Start your free trial, and see how platform + native infrastructure works together. No credit card required.