Inbox providers · tied for 28th of 52 · 2026
ColdInfra pricing and review
coldinfra.com · Google & Microsoft inbox reseller · Visit site ↗
- Deliverability10/27
- Inbox choice10/16
- Sending2/15
- API & AI0/7
- Buying terms10/10
- Setup cost15/25
Why it ranks here
Sells Google Workspace and Microsoft 365 inboxes. Deliverability: automatic SPF/DKIM/DMARC and replacement of burned inboxes. Agencies get client workspaces or a white-label option.
Key features
- Automatic SPF/DKIM/DMARC
- Replacement of burned inboxes
- Google Workspace inboxes
- Microsoft 365 inboxes
- A way to try before paying in full
Best for
Agencies that run inboxes for several clients.
Pricing
- Per inbox
- $3
- At volume
- $2.50
- Minimum order
- 10 inboxes
- Cheapest plan
- $30/mo
Monthly billing. Pricing page ↗ · checked Oct 31, 2026
Scorecard
| DeliverabilityWhat protects sender reputation without extra tools or subscriptions. | 10/27 | ||
|---|---|---|---|
| Inbox choiceWhich types of inboxes and domains you can get in one place. | 10/16 | ||
| Sending and workflowWhether you can run and manage campaigns without another tool. | 2/15 | ||
| API and AI agentsHow easy it is to automate the setup from code or an AI assistant. | 0/7 | ||
| Buying termsHow much you risk before you know it works. | 10/10 | ||
| Cost of a working setupWhat 30 inboxes plus warm-up and a sequencer cost per month — the cheaper, the more points. | 15/25 | ||
| Total | 47/100 | 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 inboxesNot offeredWarm-up then runs for two to three weeks, and that part cannot be compressed. | source ↗ | 0/2 | |
Automatic SPF, DKIM and DMARC setupConfirmedevery DNS record written and verified | source ↗ | 5/5 | |
| Inbox placement or spam testsNot found on site | 0/5 | ||
Replacement of burned inboxes or domainsConfirmedIf it does happen, the domain moves to the other provider or is replaced; it cannot be re-added to the provider that suspended it. | source ↗ | 5/5 | |
| Dedicated IP optionNot found on site | 0/4 | ||
| Inbox choice | |||
Google Workspace inboxesConfirmedBoth, at the same rate — Google Workspace and Microsoft 365 each start at $2.50/mailbox. | source ↗ | 5/5 | |
Microsoft 365 / Outlook inboxesConfirmedBoth, at the same rate — Google Workspace and Microsoft 365 each start at $2.50/mailbox. | source ↗ | 5/5 | |
Private SMTP/IMAP inboxesNot offeredDoes COLDINFRA offer Google and Microsoft accounts? Both, at the same rate — Google Workspace and Microsoft 365 each start at $2.50/mailbox. | source ↗ | 0/3 | |
Domain purchase inside the productNot offeredDomains are not included. You buy them at your registrar and point the nameservers at us. | source ↗ | 0/3 | |
| Sending and workflow | |||
Built-in campaign sequencerNot offeredWe build the sending domains, the DNS and the warm-up; you connect your sequencer. | source ↗ | 0/5 | |
Unified inbox for repliesNot offeredWe build the sending domains, the DNS and the warm-up; you connect your sequencer. | source ↗ | 0/4 | |
Export to other sending toolsNot offeredWe hand you the credentials formatted to paste in; there is no connector to configure. | source ↗ | 0/4 | |
Multi-client workspaces or white-labelConfirmedFor Agencies: Multi-client infrastructure, clients keep ownership | source ↗ | 2/2 | |
| API and AI agents | |||
| Public APINot found on site | 0/4 | ||
| Official MCP serverNot found on site | 0/3 | ||
| Buying terms | |||
Prices published on the siteConfirmedPay per mailbox. Nothing else. | source ↗ | 4/4 | |
Free plan, free trial or money-back guaranteeConfirmedAll plans include a 30-day refund policy | source ↗ | 4/4 | |
Monthly billing availableConfirmedHow does billing work? Monthly, per mailbox. | source ↗ | 2/2 | |
| Cost of a working setup | |||
Cost of a working setup (30 inboxes)Calculated30 inboxes × $3 = $90 + $97 — Instantly Hypergrowth for warm-up and sending (the inbox price includes neither) = $187/month | how ↗ | 15/25 | |
Alternatives to ColdInfra
Where we checked
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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