---
title: "Mailforge vs Primeforge (2026): Shared vs Real IP"
description: "Mailforge vs Primeforge 2026: shared IP at $2/mo vs real Google/Microsoft at $3.50-4.50/mo. InboxKit offers real accounts with plans from $39/mo."
canonical: "https://www.inboxkit.com/learn/mailforge-vs-primeforge"
author: "Saksham Jain"
published: "2026-03-30"
updated: "2026-03-30"
category: "Comparisons"
---

# Mailforge vs Primeforge (2026): Shared IP vs Real Google Mailboxes for Email

Mailforge offers shared IP mailboxes at $2/mo, Primeforge provides real Google/Microsoft at $3.50-4.50/mo. After a 60-day test, the deliverability gap is 16 points (63% vs 79%). InboxKit bridges the gap with plans from $39/mo for real accounts.

## Quick Verdict

**Mailforge:** Shared IP (SMTP), $2-3/mo, 60-68% inbox placement, basic warmup, no monitoring, setup in minutes.

**Primeforge:** Real Google/Microsoft, Google $3.50/mo, Microsoft $4.50/mo, 76-82% inbox placement, partial warmup, basic monitoring, setup in days.

**InboxKit:** Real Google/Microsoft, Google $2.50/mo, Microsoft $2.50/mo, 80-85% inbox placement, AI warmup, InfraGuard monitoring, inbox testing.

| Tool | Pricing | Type | Warmup | Monitoring | Setup |
|------|---------|------|--------|------------|-------|
| **InboxKit** | **$2.50/mo** | Official Google/MS | $3/mo add-on | InfraGuard | 10 min |
| Mailforge | $2-3/mo | Shared IP | None | None | 15 min |
| Primeforge | $3.50-4.50/mo | Official Google/MS | Warmforge extra | Basic | 30 min |

| Feature | Mailforge | Primeforge | **InboxKit** |
|---------|-----------|------------|-------------|
| **Google Workspace** | Not available | $3.50/mo | **$2.50/mo** |
| **Microsoft 365** | $2-3/mo (shared IP) | $4.50/mo | **$2.50/mo** |
| **Account Type** | Shared IP (SMTP) | Real Google/MS | **Real Google/MS** |
| **Warmup** | Warmforge (extra) | Warmforge (extra) | **$3/mo add-on (isolated)** |
| **Monitoring** | Infraforge (extra) | Infraforge (extra) | **InfraGuard** |
| **Inbox Testing** | No | No | **Included** |
| **Integrations** | ~3 | ~4 | **24+** |
| **Platform Fee** | $0 | Varies | **$0** |
| **Inbox Placement** | 60-68% | 76-82% | **80-85%** |
| **Setup Time** | Minutes | Days | **10 min** |

## Deliverability: The Core Difference

60-day test with identical campaigns:

**Mailforge:** 63% inbox, 14% promotions, 23% spam. Varied wildly (54% to 72%).
**Primeforge:** 79% inbox, 11% promotions, 10% spam. Consistent within 5 points.

16-point gap = 160 more delivered emails per thousand with Primeforge. Mailforge's deliverability varied wildly due to shared IP factors.

**Winner: Primeforge, by a significant margin.**

## Cost Per Delivered Email

On 100 mailboxes sending 40 emails/day:

- **Mailforge:** $250/mo, 75,600 inbox deliveries, $0.0033/delivery
- **Primeforge:** $400/mo, 94,800 inbox deliveries, $0.0042/delivery

Mailforge is still cheaper per delivery. But the 19,200 additional inbox emails with Primeforge = ~576 extra replies and ~57 extra meetings at typical rates.

**Winner: Primeforge for ROI, Mailforge for raw cost.**

## The Real Problem: Neither Platform is Complete

**Mailforge** gives affordable mailboxes but compromises on deliverability. 37% of emails miss the inbox.

**Primeforge** gives quality mailboxes but at premium prices with no monitoring tools.

Neither offers inbox placement testing or automated monitoring.

## InboxKit: Bridging the Gap

InboxKit plans from $39/mo for 10 mailboxes (from $2.50/additional on Enterprise). Real Google + Microsoft infrastructure at competitive pricing vs both Mailforge and Primeforge.

**InfraGuard** monitors everything 24/7. **Inbox placement testing** built in. **AI warmup** produces faster, more reliable results.

## 6-Month TCO: 100 Mailboxes

**Mailforge:** $1,500 mailboxes + $375 replacements + $594 inbox testing + $4,550 monitoring + $1,500 failed campaigns = **~$8,519**

**Primeforge:** $2,400 + $160 + $594 + $5,850 + $1,000 = **~$10,004**

**InboxKit:** $1,800 + $60 replacements = **~$1,860**

InboxKit's TCO is lowest by a wide margin despite not having the cheapest per-mailbox cost.

## Frequently asked questions

### Is Mailforge or Primeforge better for deliverability?

Primeforge: 79% vs 63% inbox placement. InboxKit offers even better (80-85%) at competitive pricing (plans from $39/mo).

### Why are Mailforge mailboxes cheaper?

Shared IP infrastructure vs real Google/Microsoft accounts. Lower cost, but lower deliverability and shared reputation risk.

### Can I start with Mailforge and upgrade later?

Yes. Many teams test messaging on Mailforge then upgrade to real mailboxes for production. InboxKit makes the upgrade cost-effective with plans from $39/mo.

### What happens if a shared IP gets blacklisted?

All users on that IP are affected. Deliverability drops 20-30% overnight until resolved (24-72 hours).

### Is inbox placement testing necessary?

Yes. Without it, you discover problems after sending thousands of emails. InboxKit's built-in testing lets you verify before every campaign.

## Sources

- [Mailforge Official Pricing](https://www.mailforge.ai/pricing) (2026)
- [PrimeForge Official Pricing](https://www.primeforge.ai/pricing) (2026)
- [InboxKit Pricing](https://www.inboxkit.com/#pricing) (2026)

## Related

- https://www.inboxkit.com/learn/mailforge-pricing
- https://www.inboxkit.com/learn/primeforge-pricing
- https://www.inboxkit.com/learn/infraforge-alternatives