Inbox providers · tied for 9th of 52 · 2026
Winnr pricing and review
winnr.app · Private SMTP infrastructure · founded 2024 · legal entity: Winnr Software LLC · Visit site ↗
- Deliverability11/27
- Inbox choice6/16
- Sending6/15
- API & AI7/7
- Buying terms10/10
- Setup cost20/25
Why it ranks here
Sells private SMTP inboxes. A working setup of 50 inboxes with warm-up and a sequencer costs $166 a month, one of the lowest in the index. Inboxes arrive pre-warmed, so you can start sending sooner. Deliverability: automatic SPF/DKIM/DMARC and dedicated IPs. It has a public API and an official MCP server for automation.
Key features
- Automatic SPF/DKIM/DMARC
- Dedicated IPs
- A unified inbox
- A public API
- A way to try before paying in full
Best for
Teams that set up inboxes from code or an AI agent.
Pricing
- Per inbox
- $1.38
- At volume
- $0.95
- Minimum order
- 50 inboxes
- Cheapest plan
- $69/mo
- Domain (.com)
- $13/yr
Monthly billing. Pricing page ↗ · checked Oct 31, 2026
Scorecard
| DeliverabilityWhat protects sender reputation without extra tools or subscriptions. | 11/27 | ||
|---|---|---|---|
| Inbox choiceWhich types of inboxes and domains you can get in one place. | 6/16 | ||
| 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. | 10/10 | ||
| Cost of a working setupWhat 30 inboxes plus warm-up and a sequencer cost per month — the cheaper, the more points. | 20/25 | ||
| Total | 60/100 | 19 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 offeredTurn it on for any mailbox with one click for $0.60/mailbox/month... How do I warm up the accounts? | source ↗ | 0/6 | |
Pre-warmed inboxesConfirmedPre-warmed mailboxes are here: aged domains whose mailboxes have already been warmed, ready to send day one. | source ↗ | 2/2 | |
Automatic SPF, DKIM and DMARC setupConfirmedSPF, DKIM and DMARC are set up automatically on every domain | source ↗ | 5/5 | |
| Inbox placement or spam testsNot found on site | 0/5 | ||
Replacement of burned inboxes or domainsNot offeredWhat happens when a domain burns? Replace it. Stop sending from the domain, buy or connect a new one | source ↗ | 0/5 | |
Dedicated IP optionConfirmedDedicated IPs available ($20/IP/mo) on Enterprise | source ↗ | 4/4 | |
| Inbox choice | |||
Google Workspace inboxesNot offeredSMTP/IMAP mailboxes on Winnr's own sending infrastructure, not Google Workspace or Microsoft 365 seats | source ↗ | 0/5 | |
Microsoft 365 / Outlook inboxesNot offeredSMTP/IMAP mailboxes on Winnr's own sending infrastructure, not Google Workspace or Microsoft 365 seats | source ↗ | 0/5 | |
Private SMTP/IMAP inboxesConfirmedYou get SMTP/IMAP mailboxes on Winnr's own sending infrastructure | source ↗ | 3/3 | |
Domain purchase inside the productConfirmedDomains are a one-time purchase, priced per extension and shown at checkout before you buy | source ↗ | 3/3 | |
| Sending and workflow | |||
Built-in campaign sequencerNot offeredhand each client's mailboxes to whichever sequencer that client uses | source ↗ | 0/5 | |
Unified inbox for repliesConfirmedRead and send from every account in one unified inbox. No juggling separate logins. | source ↗ | 4/4 | |
Export to other sending toolsNot offeredOne-Click Export — Export ready-to-import CSVs for Smartlead, Instantly, Snov, SalesHandy, and every major platform | source ↗ | 0/4 | |
Multi-client workspaces or white-labelConfirmedGive each client its own domains, keep them apart with tags... Separate domains per client | source ↗ | 2/2 | |
| API and AI agents | |||
Public APIConfirmedA full REST API automates domains, email users, inboxes and more | source ↗ | 4/4 | |
Official MCP serverConfirmedConnect Claude, Cursor, or any MCP-compatible AI to Winnr... through natural language | source ↗ | 3/3 | |
| Buying terms | |||
Prices published on the siteConfirmedPlans from $69/mo for 50 mailboxes ($1.38 each) to $189/mo for 200 ($0.95 each) | source ↗ | 4/4 | |
Free plan, free trial or money-back guaranteeConfirmedIf your mailboxes aren't reaching 90% deliverability, ask and we'll refund your most recent month. No questions asked. | source ↗ | 4/4 | |
Monthly billing availableConfirmedBilled monthly. No annual contracts, no hidden fees, cancel anytime. | source ↗ | 2/2 | |
| Cost of a working setup | |||
Cost of a working setup (30 inboxes)Calculated50 inboxes × $1.38 = $69 + $97 — Instantly Hypergrowth for warm-up and sending (the inbox price includes neither) = $166/month | how ↗ | 20/25 | |
Alternatives to Winnr
Where we checked
- winnr.app/
- winnr.app/cold-email-inboxes-for-agencies.html
- winnr.app/mcp
- winnr.app/about
- winnr.app/affiliate
- winnr.app/blog/winnr-vs-competitors-cold-email-smtp.html
Only the vendor's own public pages. We do not use third-party reviews or ratings. Something wrong? Send a correction.
Badge for Winnr
Vendors can show their score. The badge updates when the score changes.