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Warmforge

warmforge.ai

From $10/mo WebWindowsmacOSAPI
Visit warmforge.ai
Spec score 7.4 #24 of 31 in Email Deliverability Software

What it is

Warmforge is an email warm-up and deliverability service for Google Workspace and Outlook mailboxes. It uses AI-written messages to imitate mailbox activity and automatically warm accounts, recommending at least two weeks before outreach. Health Checks review DNS and MX records and check blacklist status. Placement tests show delivery rates across email providers; every plan includes one free test each month. Warmforge says it removes warm-up messages that reach spam. Its curated pool uses aged accounts and is dominated by Google Workspace and Microsoft 365 mailboxes. Monitoring covers inbox placement, sender reputation, authentication, and blocklists. Users can explore features for free, but mailbox warming requires purchased slots, with one mailbox per slot. Platforms include web, macOS, Windows, and API access. Forge CLI manages mailboxes, statistics, and placement tests. Pricing starts at $10 a month, with additional testing plans available.

Spec sheet

Product
Warmforge is an email warm-up and deliverability tool that mimics human mailbox behavior using AI-written emails.Read 8 Oct 2026 · warmforge.ai
Security
Warmforge's homepage states that it is SOC 2 compliant.Read 8 Oct 2026 · warmforge.ai
Support
The site says users can contact support via chat.Read 8 Oct 2026 · warmforge.ai
Founded
2022Read 28 Sep 2026 · warmforge.ai
API and CLI
Warmforge offers API access, and the Forge CLI supports Warmforge mailbox management, warm-up stats, and placement tests.Read 8 Oct 2026 · help.salesforge.ai
Cancellation
Warmforge says mailbox slot and placement test subscriptions can be canceled at any time.Read 8 Oct 2026 · warmforge.ai
Deliverability boost
Warmforge says it automatically removes warm-up emails that land in spam.Read 8 Oct 2026 · warmforge.ai
Email providers
Warmforge works with Google Workspace and Outlook mailboxes.Read 8 Oct 2026 · warmforge.ai
Free access
Users can explore Warmforge features for free, but the site says there is no free trial for warming mailboxes because mailbox slots must be purchased.Read 8 Oct 2026 · warmforge.ai
Health checks
Health Checks monitor mailbox DNS and MX records and check blacklist status.Read 8 Oct 2026 · warmforge.ai
Mailbox slot limit
Each mailbox slot covers one mailbox, and mailboxes beyond the purchased slot count are disabled for warm-up.Read 8 Oct 2026 · warmforge.ai
Placement tests
Placement tests report mailbox delivery rates to different email service providers, and each Warmforge plan includes one free test per month.Read 8 Oct 2026 · warmforge.ai
Salesforge
Salesforge users get unlimited Warmforge mailbox slots at no extra cost.Read 8 Oct 2026 · warmforge.ai
Warm-up
The product warms mailboxes automatically and recommends warming them for at least two weeks before outreach.Read 8 Oct 2026 · warmforge.ai
Warm-up pool
The warm-up pool is described as curated, made up of aged accounts, and dominated by Google Workspace and Microsoft 365 mailboxes.Read 8 Oct 2026 · warmforge.ai

Plans and prices

Email Warm Up $10 a month Per month, billed quarterly 1 free slot included · automated AI email warm up · 1 free placement test per month · DNS and MX health checks · blacklist checks Read 8 Oct 2026 · warmforge.ai
Placement Tests Pro $39 a month Billed monthly 100 tests per month · 50 mailboxes per test Read 8 Oct 2026 · warmforge.ai
Placement Tests Growth $169 a month Billed monthly Unlimited tests · 250 mailboxes per test Read 8 Oct 2026 · warmforge.ai

Every Warmforge plan and price →

Strong points and limits

Strong points

  • AI-written automated mailbox warm-up
  • DNS, MX, and blacklist health checks
  • One free placement test monthly
  • Web, macOS, Windows, and API access
  • SOC 2 compliance stated

Limits

  • No free trial for mailbox warming
  • Purchased slots required for warming
  • Each slot covers one mailbox
  • Extra mailboxes are disabled

Who it suits

It suits teams preparing Google Workspace or Outlook mailboxes for outreach and monitoring delivery risks. Salesforge users receive unlimited Warmforge mailbox slots at no extra cost.

Verdict

Warmforge combines automated warm-up, mailbox health checks, placement testing, and reputation monitoring. Its free feature access does not remove the need to purchase mailbox slots for warming.

Where Specifiction places it

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