Premium Inboxes vs Infraforge: Cold Email Infrastructure Comparison

For a thorough understanding of what each option offers, a simplified comparison table isn't enough to grasp all intricacies that come with each tool, so let's dive deeper into what makes Premium Inboxes and Infraforge unique.

Premium Inboxes vs Infraforge: Cold Email Infrastructure Overview & Key Features

• Premium Inboxes positions itself as the go-to provider for official Google Workspace inboxes delivered fast.

The promise centers on quick setup, predictable delivery windows, and a pure play on giving teams fully configured Gmail/Google accounts that plug directly into your outreach stack.

It’s built for teams and agencies who want pre-configured inboxes and the speed to launch campaigns almost instantly, and the pricing is for per-inbox economics so you can purchase many accounts cheaply and get to full speed quickly.

• Infraforge takes a different tack: it’s explicitly sold as private cold email infrastructure with dedicated IPs, automated DNS setup, multi-IP provisioning, and even pre-warmed mailboxes.

Infraforge’s emphasis is on controlling the sending surface so you can scale high volume outreach while protecting sender reputation rather than just standing up accounts quickly.

That difference in positioning is more than marketing - the two products target distinct operational philosophies:

• Premium Inboxes is optimized for rapid inbox creation (delivered in 12 hours, though still substantially slower than Infraforge's mere minutes) and fast onboarding.
• Infraforge is built to be the backbone of a deliverability-first outbound stack that prioritizes long-term reputation and granular control.

Both approaches have real merits depending on whether your priority is immediate volume or long-term, defensible deliverability and, consequentially, long-term cost savings.

Pricing Structure

Infraforge provides flexible, usage-based pricing for dedicated-IP email infrastructure. A handy on-page calculator estimates your exact costs. Annual billing gives 2 months free.

• $14/year per .com domain
• $4/Mailbox Slot/month

Add-ons & extras

• SSL & Domain Masking: $2/domain/month (quarterly billing) or $0.5/domain/month (annual billing)
• Infraforge Expert Double Session (two 1:1 sessions with experts) for $500

Premium Inboxes provides simple, per-inbox pricing with no minimums and fast, managed Google Workspace inbox delivery. Pricing is tiered by volume (lower per-inbox rate as you scale).

• Start Up (1 - 249 inboxes): $3.50/mailbox/month
• Growth (250 - 1,249 inboxes): $3.00/mailbox/month
• Enterprise (1,250+ inboxes): $2.50/mailbox/month

Initial Setup, Onboarding & DNS Records

Speed matters: Premium Inboxes makes that explicitly part of the value prop.

• Their onboarding form process is designed so you purchase, fill out a short form with sending domains and preferences, and have fully provisioned email accounts and DNS confirmations in hours. They advertise under 12 hours (with faster upgrades available).

That model reduces friction for agencies that want to spin up large quantities of Google Workspace inboxes and get sequences running instantly.

• Infraforge’s onboarding emphasizes automated DNS setup and pre-configured authentication (SPF, DKIM and DMARC) too, but it pairs that with options for pre-warmed domains & mailboxes, bulk DNS changes, and programmatic provisioning through an API.

In practice, that means with Infraforge you get DNS and IP architecture that is designed to reduce long-term spam risk and preserve deliverability.

• For teams that value a frictionless, buy-and-send workflow, Premium Inboxes’ speed is compelling.
• But for teams that want to build sender reputation deliberately, maintain flexibility, and avoid manual steps that can lead to spam traps and suspension, Infraforge’s automated DNS and multi-IP controls provide a safer, more scalable starting point.

Programmatic Control & APIs

Programmatic control is a multiplier when you run dozens or hundreds of domains and mailboxes.

Infraforge offers API capabilities as the primary way to scale your outreach programmatically, which lets teams automate domain provisioning, DNS automation, and mailbox creation while keeping DNS and IP hygiene consistent across an infrastructure.

That programmatic layer reduces manual work and risk - you don’t need teams to manually set records or individually configure accounts, helping larger organizations keep delivery optimized while integrating with orchestration tools and marketing platforms.

Premium Inboxes focuses on a self-serve portal and the onboarding flow. It emphasizes "upload to your sending platform," but there’s no public API documentation or explicit API product page that rivals Infraforge’s programmatic offering.

Deliverability & Warm-Up

Infraforge advertises a deliverability-first design:

• Dedicated IPs
• Automated DNS setup
• Pre-warmed domains & mailboxes

Infraforge’s approach is to keep sending lanes isolated and to provide tools for automated warm-up and sender rotation so that emails land in prospects’ inboxes rather than spam folders.

Premium Inboxes emphasizes a “complete technical build out” with SPF, DKIM and DMARC configured and claims a track record of provisioning accounts that are optimized to land, with a rapid delivery SLA.

The difference is subtle but important.

• Premium Inboxes gets accounts configured quickly and correctly for immediate sending.
• Infraforge pairs correct setup with infrastructure features (dedicated IPs, multi-IP provisioning, pre-warming) that are purpose-built to help teams build sender reputation and sustain inbox placement as sending volume grows.

Alternative Infrastructure Options: Shared IP & Private IP Email Infrastructures

Salesforge uniquely bundles alternative infrastructure choices into a single stack:

• Primeforge (Google Workspace & MS365 mailboxes) for ESP-matched deliverability
• Mailforge for shared IP infrastructure needs
• Infraforge for private, dedicated-IP infrastructure and more customizable control

That product architecture means a single vendor can support multiple outbound campaigns and use-cases - from teams that want to manage multiple domains and multiple accounts cheaply, to heavy hitters who need dedicated IP provisioning or fine-grained control.

• By contrast, Premium Inboxes does not advertise a connected family of infrastructure alternatives you can switch between or use in tandem on the same platform.

For buyers weighing long-term lead generation and cold email outreach, this matters.

Having integrated alternatives (ESP-matched mailboxes + shared infra + private infra) inside one suite preserves CRM integration, feedback loops, and the ability to run deliverability tests and reputation monitoring under the same platform umbrella.

This saves time, reduces manual DNS setup and plan friction when adding new domains or new users, and helps maintain stable sender reputation as your sending volume scales.

Customer Support

Customer support models differ a lot between providers and that difference matters for adoption, troubleshooting deliverability, and long-term campaign health.

Premium Inboxes offers human-led customer support built around a simple purchase → onboarding form flow and direct email contact.

They promise quick delivery windows and emphasize real-time troubleshooting by experts for DNS, warm-up, and inbox health.

A Premium Resources Library, blog playbooks and templates back onboarding and deliverability guidance.

Infraforge advertises consultative services and add-ons - such as expert sessions to diagnose outreach challenges - along with deliverability resources and onboarding that reduces setup time.

Besides that, Infraforge also offers:

• 24/7 email and live chat support
• Extensive documentation
• Youtube tutorials
• An active Slack community
• And even weekly AMA sessions.

In practice that means fewer technical steps for your team, less manual work mapping records across registrars, and fewer hours spent troubleshooting or waiting for a response.

Final Verdict: Cold Outreach With Google Workspace Inboxes vs Dedicated IP Inboxes

Both vendors solve a real need: getting deliverable accounts into a marketing platform and running cold outreach that reaches prospects.

If your immediate priority is to purchase many Google Workspace inboxes, get them provisioned in hours, and start sending sequences with minimal setup work, Premium Inboxes is a decent choice.

Their SLA for fast delivery and the self-serve onboarding form are tailored to that use case.

But if your priority is long-term deliverability, programmatic control, multi-IP isolation, and avoiding reputation blowups as you scale high volume outreach, Infraforge is the safer, more defensible path.

It provides dedicated IPs, automated DNS and authentication, pre-warmed domains & mailboxes, multi-IP provisioning, and an API to automate domain and mailbox provisioning so your infrastructure remains consistent as volume grows.

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