Warmforge vs Mailreach
Both warm inboxes and test inbox placement. Warmforge is the free and low-cost option, part of the Salesforge family; Mailreach is the established standalone tool with a longer track record. Here is how they compare on price, testing, network, and reviews.
By Kshitij Maheshwari, co-founder · Updated June 2026
Same job, different bet
Both warm your inboxes and test whether your mail lands. They split on price and pedigree.
A free tier, warmup from about $12 per inbox a month, and free warmup if you already pay for Salesforge. Per-ESP placement testing is built in, and it lives inside the Salesforge stack.
The established standalone warmup and spam-test tool, priced at $19.50 per mailbox a month with test credits bundled. A longer track record, neutral footing, and trusted placement testing.
- ✓You want the cheapest warmup, with a free tier to start
- ✓You already pay for Salesforge, so warmup is free
- ✓You send from Google or Outlook and want per-ESP tests
- ✓You want a trusted, proven standalone tool
- ✓You want spam testing bundled into the warmup price
- ✓You want neutrality, with no platform to live inside
Short on time? We'll tell you which fits your motion.
What each tool actually is
Warmforge
A per-inbox email warmup and inbox-placement tool, part of the Salesforge family. It runs one-click AI warmup over a pool of real Google Workspace and Microsoft 365 mailboxes, with per-ESP placement tests and DNS and blacklist health checks. Free to start, free to warm up if you are a Salesforge customer. Best for cost-conscious teams on Google or Outlook.
Visit WarmforgeMailreach
A trusted standalone warmup and spam-test tool, priced per mailbox. It warms inboxes over its own network and bundles spam and placement testing into the plan, with a clear deliverability score. No platform to live inside, and a longer track record than most challengers. Best for teams that want a proven, neutral tool with testing included.
Visit MailreachWarmforge vs Mailreach, side by side
The facts that decide it, verified from each tool's official site in June 2026.
| Dimension | Warmforge | Mailreach |
|---|---|---|
| Best for | Cost-conscious teams, and Salesforge users | Teams wanting a proven, neutral standalone tool |
| Core job | Warmup plus per-ESP placement testing | Warmup plus spam and placement testing |
| Price (per inbox a month) | From $12, free in Salesforge | $19.50 |
| Free option | Yes, 1 free slot plus 1 free placement test a month | Free spam test, no free warmup trial |
| Inbox placement testing | Per-ESP placement tests (Google and Outlook) | Spam and placement testing, a core strength |
| Network | Real Google Workspace and MS365 aged inboxes | Established warmup network |
| Ecosystem | Salesforge, Mailforge, Infraforge, Primeforge | Standalone, neutral |
| Annual discount | 2 months free | 20% off |
| Track record | Newer | Longer, an incumbent |
| Reviews | G2 4.8/5 (18 reviews) | G2 4.7/5 (44), Capterra 5.0/5 (24) |
Both are priced in USD per inbox. Numbers verified June 2026, confirm the current plan on Warmforge and Mailreach before you buy.
What each one can and cannot do
A capability check, scored the same way for both tools.
| Capability | Warmforge | Mailreach |
|---|---|---|
| Google / Gmail warmup | ✓ | ✓ |
| Outlook / Microsoft 365 warmup | ✓ | ✓ |
| Any-SMTP / IMAP warmup | ✕ route via Mailforge | Not a headline feature |
| Free tier | ✓ 1 free slot, free in Salesforge | Free spam test only |
| Inbox placement / spam testing | ✓ | ✓ core strength |
| Deliverability reports | ✓ per-ESP, health checks | ✓ deliverability score |
| Network of real inboxes | ✓ aged GW/MS365 | ✓ |
| Per-ESP targeting (Google / Outlook) | ✓ | ✓ |
| Own sending platform / ecosystem | ✓ Salesforge | No, standalone |
| API | Not published | Not published |
| Team / multi-mailbox features | ✓ | ✓ |
| Annual discount | ✓ 2 months free | ✓ 20% off |
Warmforge warms Google and Outlook natively; to warm any other SMTP you route through Mailforge or Primeforge. API availability is not published for either tool, so we mark it unstated rather than guess.
What real users say
Public review scores and the themes that come up most, checked June 2026. Counts drift, so the live links are the source of truth.
Warmforge
Praised for: a dead-simple one-click setup, warmup that runs quietly in the background, strong value, clear placement visibility, and good support.
Watch-outs: occasional warmup replies leaking into the inbox, some reports of mailboxes disconnecting and flaky DNS tracking, and less value outside the Salesforge stack.
Mailreach
Praised for: trusted, established placement and spam testing, clear deliverability scoring, and a neutral standalone tool with no platform lock-in.
Watch-outs: pricier per inbox than the free-tier challengers, and per-mailbox cost that adds up across a large sending fleet.
Read the scores in context. Warmforge's 4.8 on G2 sits on a smaller, newer sample of 18 reviews, while Mailreach's 4.7 on G2 across 44 reviews and 5.0 on Capterra across 24 come from a longer track record. A high average on a thin sample is not the same as a proven one, so weigh the sample size, not just the average.
Where each one actually wins
Six things separate these tools in practice. Here is the honest call on each.
Price and the free tier
Edge: WarmforgeThis is the deciding issue for most teams choosing between these two. Warmforge starts free, with one warmup slot and one placement test a month, then runs from about $12 per inbox a month, lower on annual billing. If you already pay for Salesforge, warmup is free at any scale. Mailreach runs $19.50 per mailbox a month, a fair price for what it bundles, but it has no free warmup tier. On raw cost, Warmforge wins.
Track record and trust
Edge: MailreachMailreach has been a known name in warmup and spam testing for years, with a deeper review base: 4.7 on G2 across 44 reviews and 5.0 on Capterra across 24. Warmforge is newer, with a strong 4.8 on G2 but only 18 reviews behind it. If a longer, more-tested record matters to you, Mailreach is the safer bet.
Placement and spam testing
Edge: MailreachBoth test whether your mail lands, but Mailreach bundles 20 spam-test credits into its warmup price, and testing is one of its core strengths. Warmforge includes one free placement test a month at the warmup tier and sells higher test volume as a separate product, from $39 a month. If you want testing included from day one without a second purchase, Mailreach has the edge.
Ecosystem fit for Salesforge users
Edge: WarmforgeWarmforge is part of the Salesforge family, alongside Mailforge, Infraforge, and Primeforge. If you already run that stack for infrastructure and sequencing, warmup is free and sits in one place. Mailreach is a separate tool you bolt on. For Salesforge customers the choice is close to made for them.
Standalone neutrality
Edge: MailreachThe flip side of Warmforge's ecosystem is that its value is highest only inside it. Mailreach is neutral and standalone: it works regardless of which sending platform you use, with no stack to buy into. If you want a tool that stays independent of your sender, Mailreach fits better.
Warmup quality and network
Edge: tieBoth warm over real-inbox networks and both do it well. Warmforge runs aged Google Workspace and Microsoft 365 mailboxes with AI-written warmup mail; Mailreach uses its own established network and auto-removes warmup mail from spam. Neither network is clearly ahead in practice, so call this one even and decide on the factors above.
Want the right one picked for your setup?
We warm and test inboxes on live campaigns. Tell us your stack and we'll call it.
What each one costs in 2026
Verified from each official pricing page in June 2026. Both price per inbox, so read the model, not just the headline number.
Warmforge
USD / per inbox- Free
1 warmup slot and 1 placement test a month, free for Salesforge customers$0 - Warmup
per inbox, AI warmup, health checks, lower on annual billingFrom $12/mo - Placement tests
run separately, with higher test volumeFrom $39/mo
Warmup is free if you are a Salesforge customer. Annual billing lowers the per-inbox cost. Warmforge prices per inbox. Verified June 2026.
Mailreach
USD / per mailbox- Warmup plus spam test
per mailbox, up to 100 warmup emails a day, 20 spam-test credits bundled$19.50/mo
Mailreach scales linearly per mailbox, with 20% off on annual billing. Above 100 mailboxes you contact sales. There is a free spam test but no free warmup trial. Verified June 2026.
True cost at scale. Both price per inbox, so cost tracks your sending fleet, not your contact volume. Warmforge is the cheaper line: free for Salesforge users, otherwise about $12 per inbox. Mailreach runs $19.50 per mailbox, so 20 inboxes is about $390 a month and 50 is about $975, plus test credits. Mailreach earns its premium with bundled spam testing and a longer track record; Warmforge wins on price, especially inside the Salesforge stack.
What neither tool does well
Both are warmup and testing tools, so they share the same blind spots. Worth knowing before you expect either to carry your whole motion.
Warmup-pool signatures are increasingly detectable, so warmup helps but no longer guarantees the inbox. Placement testing matters more than raw warmup volume now.
They protect deliverability, but neither tells you which accounts are in-market right now. That is targeting, not warmup.
Neither sends cold email. They warm and test your inboxes, but you still need a separate sender on top to run sequences.
Need a tool to actually send? See our best cold email tools for 2026. Want the right accounts found and timed for you? That is the signal-based outbound we run.
Our take, after running both
The choice is mostly about budget and ecosystem, not a feature count. Here is how we'd call it in three situations.
A free tier, about $12 per inbox after that, and free warmup if you already pay for Salesforge. Especially clear-cut inside the Salesforge stack.
A longer track record, neutral footing, and spam testing bundled into the $19.50 per mailbox price. The safer bet when proven matters.
Warmup is a baseline, not a guarantee in 2026. Pair either tool with deliverability monitoring and watch where your mail actually lands.
Not sure which fits? We run signal-based outbound for early-stage teams and will tell you straight.
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Co-founder of Real Good GTM. He has been the first business hire and Chief of Staff at seed-stage B2B startups, building outbound pipeline before any playbook existed. This comparison comes from running these tools on live campaigns, not from a spec sheet.
Connect on LinkedInQuestions buyers ask
Is Warmforge better than Mailreach?
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Which is cheaper, Warmforge or Mailreach?
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Which has better reviews, Warmforge or Mailreach?
Do Warmforge or Mailreach send cold emails?
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