Inbox providers · 26th of 52 · 2026
Frostmailer pricing and review
frostmailer.com · Google & Microsoft inbox reseller · Visit site ↗
- Deliverability7/27
- Inbox choice13/16
- Sending6/15
- API & AI7/7
- Buying terms6/10
- Setup cost12/25
Why it ranks here
Sells Google Workspace and Microsoft 365 inboxes. Inboxes arrive pre-warmed, so you can start sending sooner. Deliverability: automatic SPF/DKIM/DMARC. It has a public API and an official MCP server for automation. Agencies get client workspaces or a white-label option.
Key features
- Automatic SPF/DKIM/DMARC
- Google Workspace inboxes
- Microsoft 365 inboxes
- One-click export to other sequencers
- A public API
Best for
Agencies that run inboxes for several clients.
Pricing
- Per inbox
- $3.38
- At volume
- $0.34
- Cheapest plan
- $3.38/mo
Monthly billing. Pricing page ↗ · checked Oct 31, 2026
Scorecard
| DeliverabilityWhat protects sender reputation without extra tools or subscriptions. | 7/27 | ||
|---|---|---|---|
| Inbox choiceWhich types of inboxes and domains you can get in one place. | 13/16 | ||
| Sending and workflowWhether you can run and manage campaigns without another tool. | 6/15 | ||
| API and AI agentsHow easy it is to automate the setup from code or an AI assistant. | 7/7 | ||
| Buying termsHow much you risk before you know it works. | 6/10 | ||
| Cost of a working setupWhat 30 inboxes plus warm-up and a sequencer cost per month — the cheaper, the more points. | 12/25 | ||
| Total | 51/100 | 16 of 20 conditions checked |
The evidence
Every condition, what the vendor's own site says, and where.
| Deliverability | |||
|---|---|---|---|
| Ongoing warm-up included in the priceNot found on site | 0/6 | ||
Pre-warmed inboxesConfirmedFour weeks of warm-up already done. Delivered within 24 hours. | source ↗ | 2/2 | |
Automatic SPF, DKIM and DMARC setupConfirmedFull DNS setup, SPF DKIM DMARC | source ↗ | 5/5 | |
| Inbox placement or spam testsNot found on site | 0/5 | ||
Replacement of burned inboxes or domainsNot offeredWe may pause or withdraw a listed domain or inbox immediately to protect our infrastructure. Any replacement is at our discretion and may be charged. | source ↗ | 0/5 | |
| Dedicated IP optionNot found on site | 0/4 | ||
| Inbox choice | |||
Google Workspace inboxesConfirmedMicrosoft/Outlook (Azure) mailboxes and Google Workspace mailboxes | source ↗ | 5/5 | |
Microsoft 365 / Outlook inboxesConfirmedMicrosoft/Outlook (Azure) mailboxes and Google Workspace mailboxes | source ↗ | 5/5 | |
Private SMTP/IMAP inboxesNot offeredFrostmailer provides cold email infrastructure: Microsoft/Outlook (Azure) mailboxes and Google Workspace mailboxes | source ↗ | 0/3 | |
Domain purchase inside the productConfirmedBuy domains, mailboxes and DNS in one place | source ↗ | 3/3 | |
| Sending and workflow | |||
Built-in campaign sequencerNot offeredConnects to any sequencer | source ↗ | 0/5 | |
| Unified inbox for repliesNot found on site | 0/4 | ||
Export to other sending toolsConfirmedSend from any platform. Your mailboxes connect in a click. | source ↗ | 4/4 | |
Multi-client workspaces or white-labelConfirmedCold email mailboxes Azure and Google, for agencies. | source ↗ | 2/2 | |
| API and AI agents | |||
Public APIConfirmedOrder from Claude Code, MCP, API or Slack. Provision mailboxes from your terminal, your editor or Slack. | source ↗ | 4/4 | |
Official MCP serverConfirmedOrder from Claude Code, MCP, API or Slack. Provision mailboxes from your terminal, your editor or Slack. | source ↗ | 3/3 | |
| Buying terms | |||
Prices published on the siteConfirmedAzure from €0.30 with the .com domain included. Google Workspace full admin from €2.50. | source ↗ | 4/4 | |
Free plan, free trial or money-back guaranteeNot offeredno refund is issued once inboxes have been delivered and setup is complete | source ↗ | 0/4 | |
Monthly billing availableConfirmedStandard €0.30 / account / mo | source ↗ | 2/2 | |
| Cost of a working setup | |||
Cost of a working setup (30 inboxes)Calculated30 inboxes × $3.38 = $101 + $97 — Instantly Hypergrowth for warm-up and sending (the inbox price includes neither) = $198/month | how ↗ | 12/25 | |
Alternatives to Frostmailer
Where we checked
- frostmailer.com/
- frostmailer.com/terms
- frostmailer.com/api/
- frostmailer.com/blog
- www.frostmailer.com/spam-checker
Only the vendor's own public pages. We do not use third-party reviews or ratings. Something wrong? Send a correction.
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