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Infraforge is a private cold email infrastructure platform designed specifically for teams that run high-volume outbound campaigns and require full control over their sending environment. It sits in the stack layer below the sequencing tools: rather than writing and sending emails, Infraforge manages the underlying infrastructure through which those emails travel, largely determining whether they land in the inbox or the spam folder.

The platform's key feature is the provision of dedicated IP addresses for each mailbox. In a shared infrastructure model (the default for Gmail, Outlook, and most mainstream email providers), your sender reputation is partially determined by the behavior of thousands of other users sharing the same IP pool. A single bad actor on the same shared IP can trigger blacklisting that affects every sender on it. Infraforge eliminates that risk by assigning private IPs, meaning your deliverability is controlled entirely by your own sending behavior.

Automated DNS setup handles the entire technical configuration of a new domain from the moment it is added to the platform. DMARC, SPF, and DKIM records are configured automatically in accordance with industry best practices, eliminating a step that typically requires manual DNS management or a technical team. Bulk DNS updates allow changes to be applied across an entire domain portfolio in a single operation.

The platform supports the creation of an unlimited number of domains and mailboxes, organized through a workspace system that is particularly useful for agencies managing infrastructure for multiple clients. Each workspace operates independently, with its own domains, mailboxes, IP addresses, and monitoring data. Mailbox slots operate on a capacity-based model: you pay for slots rather than active mailboxes, which means that creating and deleting mailboxes within a purchased slot does not incur additional charges.

Real-time deliverability monitoring tracks IP health, sending patterns, and mailbox behavior, identifying issues before they escalate into blacklisting or reputation damage. The platform also includes a Masterbox feature that consolidates all email activity across every mailbox in a workspace into a single view, eliminating the need to check individual accounts. Sender rotation is built in to intelligently distribute the sending load across mailboxes and IPs, which helps prevent triggering spam detection thresholds.

Infraforge integrates natively with Salesforge (its sister sending tool from the same product family) and connects to external sequencing platforms via a full API, which enables programmatic provisioning of domains and mailboxes, custom dashboard integrations, and automated onboarding workflows for agencies. Additional add-ons include SSL and domain masking (to hide primary domains behind branded tracking), dedicated IP address provisioning for specific campaigns, and expert consulting sessions for teams facing complex deliverability challenges.

• The dedicated IP model fundamentally changes deliverability control for serious senders: Most cold email practitioners eventually hit a wall with shared infrastructure: blacklistings that appear without explanation, inconsistent inbox placement across domains, and no visibility into what other senders sharing your IP are doing. With Infraforge, the sender reputation is entirely yours to build or damage. For teams that follow good outreach practices, this translates into measurably better inbox rates. One G2 reviewer specifically notes that the dedicated IP model means they are no longer penalized for other senders' behavior, which is the core argument for private infrastructure over shared pools.

• Automated DNS configuration eliminates what is usually the most time-consuming step of the setup: Getting DMARC, SPF, and DKIM configured correctly is one of the most common stumbling blocks for teams setting up cold email infrastructure, either because the configuration is done incorrectly or because the process is slow and error-prone when done manually across dozens of domains. Infraforge handles this automatically when a domain is added, with bulk update capabilities for existing portfolios. This alone significantly reduces the time between purchasing a domain and being ready to send.

• The workspace structure is well-designed for agencies: The ability to create isolated environments for each client, each with its own domains, mailboxes, IP addresses, and analytics, is not merely a cosmetic feature. It directly impacts how effectively an agency can manage risk and reporting across accounts. If one client’s campaign generates spam complaints, it cannot compromise the infrastructure of other workspaces. Several reviews from agency founders specifically cite workspace organization as a primary reason they chose Infraforge over alternatives.

• Pricing is usage-based and can be canceled at any time, with no minimum contract: The slot-based mailbox model (paying for capacity rather than active mailboxes) gives teams the flexibility to rotate through mailbox setups without incurring additional charges, which is a significant operational advantage when testing new domain configurations or phasing out domains that have become obsolete. Annual billing includes two months free.

• The platform integrates into the broader Forge ecosystem: For teams already using Salesforge for sequences, Warmforge for mailbox warming, or Leadsforge for lead sourcing, Infraforge serves as the infrastructure layer of a cohesive outbound stack without requiring third-party connection management. The API also allows teams not using Salesforge to connect Infraforge to their existing sequencing tools.

• There is no free trial: Because Infraforge is an infrastructure service rather than software, you need to purchase actual domains and mailbox slots to use it effectively. You can explore the app after signing up, but without spending money, there is nothing functional to evaluate. For teams that want to test deliverability results before committing, this is a real barrier, and it makes the initial purchasing decision require a degree of trust that comparable platforms with trial periods do not require.

• The pricing model has several components that require careful calculation upfront: The mailbox cost ($4 per mailbox per month billed annually, or $100 per month billed quarterly for 25 slots as a reference), domain costs (purchased separately as standard .com domains), and the various add-ons (SSL/domain masking, dedicated IPs at $99 per IP per month, Masterbox per workspace) make the total cost of a production setup less immediately clear than a flat subscription. Teams that do not use the pricing calculator carefully may underestimate their monthly expenses, particularly as they expand their domain portfolios.

• Infraforge requires a basic understanding of email deliverability to realize its full potential: The automated DNS setup handles authentication correctly, but decisions regarding how many mailboxes to run per domain, how aggressively to warm up new mailboxes, what sending volumes are safe, and how to structure sending rotation still require informed judgment. For teams without experience in cold email infrastructure, the platform’s capabilities may be underutilized or, worse, misconfigured at the campaign level even when the infrastructure itself is set up correctly. The expert consulting add-on exists precisely to fill this gap, but at $500 per double session, it represents a significant additional cost.

• Dedicated IPs, while generally advantageous, are not the right choice in every situation: Infraforge itself acknowledges this: if a team’s campaigns are likely to generate a high volume of spam complaints (due to targeting, list quality, or message relevance), a shared IP pool like Mailforge may actually be the better option, because the risk is distributed rather than concentrated on your own IPs. Building and maintaining a strong dedicated IP reputation requires consistent, disciplined sending over time. Teams that fail to meet this standard risk building a poor reputation on their own IPs faster than they would on a shared infrastructure.

Infraforge uses a calculator-based pricing model rather than fixed pricing tiers. The total cost depends on three variables: the number of domains needed (purchased as standard .com domains at ~$14/year each, billed once), the number of mailbox slots required (billed monthly at $4/mailbox/month annually or ~$5/mailbox/month quarterly), and any add-ons. A pricing calculator on the site helps determine requirements based on campaign volume, emails per sequence, and contacts processed per month.

No free trial is available. You can explore the app after signing up without purchasing domains or mailboxes, but you cannot send emails or access infrastructure features without a paid plan.