Aerosend vs Infraforge: Which Cold Email Infrastructure Actually Scales?

Infraforge is often marketed as a low-cost way to spin up mailboxes for cold outreach. On the surface, it looks appealing: simple pricing, quick access, and basic mailbox provisioning. But when teams try to scale cold email, Infraforge’s limitations surface quickly. Cold outreach requires isolated infrastructure, predictable deliverability, and real-time monitoring. Aerosend was built specifically for that purpose. Infraforge was not. This comparison breaks down how Aerosend and Infraforge differ in deliverability, infrastructure design, and long-term scalability.

Why Infraforge Falls Short for Cold Outreach

Infraforge may work for basic setups, but it struggles when cold email volume increases.

1. Shared IP infrastructure

Infraforge relies primarily on shared IPs unless users pay extra for dedicated IPs. In cold email, shared IPs create unavoidable risk. Even if your lists are clean and your sending habits are conservative, another sender on the same IP can damage deliverability overnight. Cold outreach does not tolerate shared reputation.

2. Dedicated IPs come at a premium

Infraforge charges an additional $99/month per dedicated IP, which quickly increases costs as you scale. This makes safe scaling expensive and discourages proper infrastructure isolation, pushing many users back onto shared IPs where performance is unpredictable.

3. Limited deliverability monitoring

Infraforge does not offer robust, outbound-focused monitoring such as:

• Domain burn alerts

• Bounce spike detection

• Real-time reputation insights

Without visibility, teams often discover problems after inboxes are already burned.

4. Not purpose-built for cold outreach at scale

Infraforge focuses on mailbox provisioning, not cold email infrastructure as a system. There is no built-in concept of:

• Inbox clustering

• Domain rotation

• IP rotation

• Self-healing infrastructure

These are essential for long-term outbound stability.

Why Aerosend Works Better Than Infraforge

Aerosend was designed from day one for cold outreach at scale, not just mailbox creation.

Private infrastructure by default

Every Aerosend user gets fully isolated inbox clusters, with dedicated, aged IPs assigned per cluster. Your deliverability is never influenced by another sender. No shared IPs. No shared risk.

Premium warmup included

Aerosend includes premium inbox warmup for every mailbox, optimized specifically for cold email behavior. Infraforge treats warmup as optional or external. Aerosend treats it as foundational.

Built-in deliverability protection

Aerosend actively monitors:

• Domain reputation

• IP health

• Bounce spikes

• Blacklist events

And alerts users before domains burn, not after. This is where mailbox farms fail and private infrastructure wins.

Built to scale safely

Aerosend supports:

• Domain rotation

• Inbox clustering

• Automated setup

• Unlimited safe scaling

Outbound teams can grow volume without constantly replacing inboxes.

Aerosend vs Infraforge: Feature Comparison

How TimelinesAI Escaped the Mailbox Farming Cycle

For many outbound teams, mailbox churn has become “normal.” Inbox bans, declining deliverability, and constant replacements are treated as a cost of doing cold email. TimelinesAI learned this the hard way. Before switching to Aerosend, the team had tested multiple cold email providers. Across those setups, nearly 60% of their inboxes churned over time. Deliverability would start strong, then gradually decline until inboxes became unusable. TimelinesAI is a B2B productivity tool, and cold outreach is one of its primary acquisition channels. Inbox stability mattered. Replacing mailboxes every few months wasn’t scalable. That’s when Daniel from the team decided to try Aerosend. At first, results looked similar to other providers. Reply rates and inbox placement were consistent, but the difference became obvious over time. Aerosend inboxes lasted. While other inboxes typically burned out after weeks or months, Aerosend inboxes continued sending reliably without constant replacements. Deliverability held steady instead of degrading. The reason wasn’t copy or targeting. It was infrastructure. Aerosend’s private, isolated setup allowed inboxes to recover instead of churn, breaking the mailbox farming cycle entirely. Daniel also highlighted another factor that mattered during the transition: support. When deliverability questions came up, Aerosend’s team responded quickly and knew how to diagnose cold outreach–specific issues. For TimelinesAI, the shift was simple but fundamental: Stop burning inboxes. Start running infrastructure built to last.

How to Set Up Aerosend as an Infraforge Alternative

1. Add or procure domains
   Bring your own domains or let Aerosend source and configure them automatically.

2. Create inbox clusters
   Inboxes are grouped into isolated clusters designed for safe volume scaling.

3. Authenticate automatically
   SPF, DKIM, DMARC, MX, and tracking records are set up without manual DNS work.

4. Start premium warmup
   Every inbox is warmed up safely using aged IPs and controlled engagement.

5. Connect your sequencer
   Integrate with Instantly, Smartlead, Apollo, or your outbound platform.

6. Monitor and optimize
   Track deliverability, reputation, and domain health in real time.

Frequently Asked Questions: Aerosend vs Infraforge