Winnr is a cold email infrastructure platform. You buy or connect domains, Winnr creates authenticated mailboxes on them (SPF, DKIM, DMARC set up for you), warms them, and you plug the credentials into any sending tool — Smartlead, Instantly, EmailBison, Salesforge, or one of the other 15+ integrations. It replaces the multi-day setup of Google Workspace or Microsoft 365 with a few clicks, at a fraction of the cost.
Who Winnr is for
Winnr is built for teams that send cold email at scale. That includes:
- Sales teams running outbound at 500-10,000+ emails per day
- AI SDR builders provisioning infrastructure programmatically via the API or MCP server
- Demand-gen agencies managing sending for multiple clients
- Founders who want their own infrastructure without spending a week setting up DNS
If you send fewer than 200 cold emails a day, a single Google Workspace inbox is usually enough. Winnr's economics start making sense once you outgrow that.
What Winnr does for you
There are four things Winnr handles that would otherwise take you days:
- Domain provisioning. Buy new domains through Winnr, or import ones you already own. DNS records for authentication (SPF, DKIM, DMARC) are set up automatically.
- Mailbox creation. Create up to 10 mailboxes per domain in a few seconds. Each mailbox gets its own SMTP/IMAP credentials.
- Warming. Winnr's built-in warming ramps mailboxes gradually so they don't get flagged when you start sending real campaigns.
- Export to your sending tool. One-click export to any of the major sending platforms, or download a CSV.
You control the domains, the mailboxes, and the sending. Winnr is the plumbing.
What Winnr does not do
Winnr is deliberately not a sending tool. There's no campaign builder, no sequence editor, no lead database, and no reply detection built in. That's what tools like Smartlead, Instantly, and EmailBison are for. Winnr feeds them credentials.
The reason: infrastructure and campaign management are two different problems, and mixing them means you're locked in on both sides. With Winnr you can swap sending tools any time — the mailboxes are yours.
How the pieces fit together
Winnr (mailboxes on your domains, with SPF/DKIM/DMARC and warming)
│
└──▶ Export credentials to Smartlead / Instantly / EmailBison / etc.
│
└──▶ Your sending tool runs the actual campaign
The typical setup takes about 30 minutes: buy a handful of domains, create mailboxes on each, turn on warming, export to your sending tool. Warming runs in the background for 2-3 weeks while you finalize your copy and targeting.
What's next
- If you don't have a Winnr account yet: Create your account
- Already signed up? Set up your first domain
- Comparing plans? Choose your plan
Frequently asked questions
Do I need my own domains to use Winnr?
No — you can buy domains through Winnr in a few clicks (Winnr handles the registration and DNS), or connect domains you already own. Most customers do a mix.
What sending tools does Winnr work with?
Anything that accepts SMTP or IMAP credentials. Winnr ships one-click exports for Smartlead, Instantly, EmailBison, Salesforge, Snov, Reply.io, Woodpecker, Mailshake, SalesHandy, and 10+ others. Generic CSV works for the rest.
How is Winnr different from Google Workspace or Microsoft 365?
Winnr runs its own SMTP infrastructure — you get dedicated IPs, no per-seat cost creep, no risk of a Google shutdown for "unusual activity," and mailboxes provisioned in minutes instead of days. Deliverability is the same or better once warmed.
How much does Winnr cost?
The Startup plan is $69/month for 50 mailboxes; Enterprise is $189/month for 200 mailboxes. Domains are $1-$10 one-time. Warming is $0.60/mailbox/month if you turn it on. See the [pricing page](https://winnr.app/#pricing) for the full breakdown.