# Frostmailer

> Frostmailer sells cold email sending infrastructure: Microsoft Azure (Outlook) mailboxes, Google Workspace mailboxes, pre-warmed mailboxes, and done-for-you cold email buildouts for agencies and B2B companies. Orders, DNS, warm-up and handover run inside app.frostmailer.com, with a public REST API and an MCP server.

## Products and pricing (EUR, per month)

- Azure / Microsoft mailboxes: €30 per tenant. One tenant is one .com domain (included) plus 25, 50 or 100 inboxes, at the same price. That is €0.30 per mailbox at 100 inboxes. Each tenant sends about 200 emails per day.
- Pre-warmed Azure: €50 per tenant, delivered after 4 weeks of warm-up.
- Google Workspace full admin: €3.00 per inbox below 250, €2.80 from 250 to 499, €2.50 from 500. Domains are not included. Maximum 3 sending addresses per domain.
- Pre-warmed Google: €8.00 per account, domain included, 4 weeks of warm-up done, minimum 3 accounts.
- Build and Release (done-for-you buildout): €1,000 per month for 500 Azure accounts on 10 domains (about 2,000 emails per day), or €1,700 per month for 1,500 accounts on 30 domains (about 6,000 emails per day). Includes copy, campaign setup in SmartLead, the first month of leads and lifetime Slack support. Released to the client after 14 days.
- Managed infrastructure rotation: custom pricing, book a call.
- AI reply bot for SmartLead campaigns: $80 per month add-on.
- Stealth Redirect: domain masking add-on.

Frostmailer does not sell SMTP.

## Integrations

Mailboxes connect to EmailBison, Smartlead, Instantly, PlusVibe, Success.ai and MasterInbox.

## Developers

- REST API base URL: https://app.frostmailer.com/api/v1 (Bearer API keys)
- MCP server: npm package frostmailer-mcp
- Overview: https://frostmailer.com/api/
- White label and partner pricing: https://frostmailer.com/white-label/
- Comparisons: https://frostmailer.com/vs/zapmail/ , /vs/hypertide/ , /vs/maildeck/ , /vs/inframail/ , /vs/premium-inboxes/

## Links

- Home: https://frostmailer.com/
- Resources and guides: https://frostmailer.com/resources/
- Free spam checker: https://frostmailer.com/spam-checker/
- Free mailbox and domain calculator: https://frostmailer.com/mailbox-calculator/
- Free AI cold email copywriter: https://app.frostmailer.com/copywriter
- Blog: https://frostmailer.com/blog/
- App: https://app.frostmailer.com
- Reviews: https://www.trustpilot.com/review/frostmailer.com
- Community: https://www.skool.com/frostmailer
- Book a call: https://calendly.com/jason-frostmailer/30min