Maildoso vs Primeforge: 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 Maildoso and Primeforge unique.

Maildoso vs Primeforge: Cold Email Infrastructure Overview

Primeforge and Maildoso approach cold email infrastructure with different starting assumptions about what improves inbox placement and what saves teams time.

• Primeforge positions itself as a deliverability-first provider that provisions real Google Workspace and Microsoft 365 mailboxes configured automatically with SPF/DKIM/DMARC, bulk DNS updates, US IP addresses, and even pre-warmed mailboxes ready to send.

The primary sales pitch here is “ESP-matching” (sending from the same mailbox providers your prospects use). You materially increase the chance emails land in the primary inbox, reduce risk from fragile reseller panels, and avoid “loopholes” that break at scale.

Primeforge advertises per-mailbox pricing in the ~$3.5–$4.5 range depending on scale, and emphasizes that accounts are ready in just 30 minutes, while removing most of the manual DNS complexity that teams dread.

• Maildoso’s pitch is oriented toward extreme operational scale for outbound teams. Register domains in-dashboard, create hundreds of mailboxes in minutes, use a single master inbox to manage replies centrally, and run automatic IP rotation to reduce downtime from flagged IPs.

Maildoso markets aggressive pricing and highlights built-in reputation monitoring and an API to automate provisioning.

Taken together, the two providers sit at complementary poles:

• Primeforge emphasizes mailbox ownership, predictable ESP behavior, and a conservative deliverability-first stack that integrates cleanly with existing cold email tools.
• Maildoso emphasizes quick provisioning, scalability, and rotation-based resilience for high-volume outbound campaigns.

Which one is the better fit depends on whether your priority is long-term sender reputation and seamless integration or the low per-mailbox cost with a higher chance of burning the mailboxes.

Pricing Structure

Primeforge provides flexible, usage-based pricing for Gmail and Outlook email infrastructure (you buy domains + mailbox slots). A handy on-page calculator estimates your exact costs. Annual billing for mailboxes gives 2 months free.

• $14/year per .com domain. Use the calculator to see how many domains you’ll need for your sequences.
• $4.5/Mailbox Slot/month. Minimum purchase: 10 mailbox slots.
• With annual billing the effective cost for 10 slots is $38/month.

Extras

• Forge Expert Double Session: $500 for two 1:1 consulting sessions

Maildoso provides the following plans for shared IP email infrastructure (each plan billed quarterly).

• $100/mo for the 32 mailbox plan (8 domains included for free)
• $166/mo for the 68 mailbox plan (17 domains included for free)
• $733/mo for the 400 mailbox plan (100 domains included for free)
• $12 for each domain

Email Deliverability Fundamentals

Deliverability is the single most consequential factor for cold email outreach: whether your emails land in a primary inbox or the spam folder determines click through rates, response rates, and ultimately whether your outreach generates qualified meetings and potential customers.

• Primeforge centers its proposition on providing legitimate Google Workspace and Microsoft 365 mailboxes that are engineered for cold outreach, using ESP-matching so you send from the same mailbox providers your prospects use.

This tactic significantly increases inbox placement and reduces spam-folder risk.

Primeforge's offering includes automated DNS setup (SPF/DKIM/DMARC), pre-warmed mailboxes, and even US-based IPs intended to create a reliable baseline for deliverability and to reduce the fragility you see with generic or reseller mailboxes.

• Maildoso pitches a different approach: purpose-built sending domains and an advanced IP rotation system that automatically replaces flagged IPs.

Maildoso also emphasizes that domains and mailboxes are configured out of the box and that they can run AI-driven warmup agents in-browser to appear more “natural.”

While both approaches improve deliverability to different degrees, they focus on different trade-offs:

• Primeforge practically guarantees high deliverability by using brand-name ESPs via fully owned Google/MS mailboxes with trustworthy US IPs and automated DNS management.
• Maildoso tries to improve resilience at scale through IP rotation and domain provisioning.

Domain & Inbox Setup

Time-to-launch and domain ownership matter when you’re running outreach campaigns at scale.

• Maildoso promises fast setup: register domains inside the dashboard, create mailboxes, and have mailboxes ready to export in about 10 minutes. It highlights domain forwarding to your main site and the ability to create hundreds of domains and thousands of mailboxes quickly.
• While Primeforge’s mailboxes might take a slightly longer time to setup, with a pitch centered on automated DNS set up for high quality Google Workspace and MS365 mailboxes with bulk DNS updates across multiple domains, the additional setup time can prove highly beneficial in the long-term.

The difference here is nuanced but significant:

• Primeforge stresses full domain & mailbox ownership combined with automations that turn complex DNS setup into a simple flow while provisioning mailboxes on brand-name ESPs.
• Maildoso treats domains and email accounts as lightweight assets that you can spin up in massive numbers.

For teams that want to maintain primary domain control while avoiding DNS hell, Primeforge’s model reduces manual work and ensures the primary and secondary domains are configured to industry best practices.

Warm-up tools, AI warmup, and pre-warmed mailboxes

Maildoso advertises an AI-driven warmup tool that performs in-browser actions and sends hundreds of natural-looking messages per mailbox per day to generate positive engagement and reduce spam complaints.

Primeforge can offer proprietary warm-up tooling via another Forge stack tool - Warmforge - but another option Primeforge offers is pre-warmed mailboxes so new domains and mailboxes can be added and integrated into your sending software quickly.

That difference is strategic:

Maildoso’s AI warmup and aggressive automated rotation are designed to get many mailboxes active over time and sustain high-volume sending.

Primeforge’s pre-warmed mailboxes and the emphasis on automated DNS, ESP-matching and industry best practices aim to provide mailboxes that arrive with a safer reputation baseline for cold email outreach.

Alternative Options

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, Maildoso’s positioning does not advertise a connected family of infrastructure alternatives you can switch between on the same platform. Maildoso focuses on one primary cold email solution where you manage multiple domains and mailboxes, and large fleets of email accounts.

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 and onboarding materially impact how quickly your team can run outreach campaigns without errors.

Maildoso highlights hands-on services like deliverability audits for customers, a coaching program, webinars, and a Slack community.

They also recently launched an API and re-launched reputation measurement, showing investment in both self-service and expert-enabled support.

Primeforge 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, Primeforge also offers:

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

Final Verdict - Which Infrastructure Provider Should You Pick For Your Cold Email Campaigns?

Both platforms offer compelling cold email tools for outreach campaigns, but the right pick depends on how you prioritize deliverability, ownership, and operational simplicity.

Maildoso is great when you need hundreds of domains and thousands of mailboxes fast, rely on automatic IP rotation, and use a master inbox to simplify replies.

It offers built-in deliverability tests and a focus on outbound emails and large scale campaigns.

Primeforge, however, is the better choice for teams who want predictable inbox placement and fewer surprises.

You get fully owned Google Workspace and MS365 mailboxes provisioned with automated DNS, pre-warmed readiness, US IP addresses, bulk DNS updates, and ESP-matching that helps your emails land in the primary inbox.

For sales teams, agencies, and companies that rely on CRM integration, feedback loops, and long-term sender reputation management rather than churn-and-replace domain fleets, Primeforge’s model saves time, reduces manual work, and supports high-quality cold outreach without resorting to fragile tricks.

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