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Elite SMTP Cold Email Infra

Scale Your Cold
Email Outreach

SMTP email accounts with automatic DKIM, SPF & DMARC. Thousands of messages per day at a fraction of Google Workspace pricing.

Get Started Watch Demo
API First $1 per Mailbox Best in Class SMTP Shared + Dedicated IPs No Shutdowns Built-in Warming
Trustpilot 5 stars Trusted by hundreds of cold email senders
Works with every major sales platform
Smartlead Snov.io Apollo Instantly Outreach Saleshandy Salesloft EmailBison PlusVibe
Quick demo

See it in action

From signup to 50+ email accounts — ready for warmup and sending in less than 10 minutes.

REST API

Build with the
winnr API

Automate your entire cold email infrastructure.
Domains, users, inboxes — all programmable.

Domain Management

Purchase, connect external domains, check DNS, configure redirects — all via API.

Bulk User Creation

Spin up hundreds of email users on any domain. IMAP/SMTP provisioned instantly.

Inbox Access

Read, send, delete emails programmatically. Build custom inbox management workflows.

// Create 10 email users in one call
curl -X POST https://api.winnr.app/v1/email-users/bulk \
  -H "Authorization: Bearer wnr_..." \
  -H "Content-Type: application/json" \
  -d '{
    "domain": "trymycompany.com",
    "users": ["john.smith", "jsmith", "john.s"]
  }'
200 OK · 42ms
Get API Access View Docs →
The platform

Everything you need, built in

From domain setup to sending — every step is fast, simple, and powerful.

Purchase domains from $1
Connect domains in winnr
Bulk domain and user management
Add email users
Export for all major platforms
Universal mailbox
Self-serve API
Why switch

What makes winnr different

See how winnr stacks up against Google/Microsoft and other SMTP providers.

Google / Microsoft
~$4 per account/mo
Overnight mass suspensions
No deliverability guarantee
No refund policy
Standard support only
Not built for outbound
Extremely high concentration risk
winnr
~$1 per account/mo
Purpose-built for cold email
90% deliverability guarantee
Full satisfaction refund
Email, Slack & WhatsApp support
Elite, gold-standard SMTP
Deep email infra experience
Other SMTP
$1.50–$4 per account/mo
Constant technical issues & disconnects
No deliverability guarantee
No refund policy
Email-only or no support
"Unlimited" cheap mailboxes
Fly-by-night operations
Our guarantee

90% deliverability — or your money back

We stand behind our infrastructure. If your accounts don't hit 90% deliverability, we'll refund you in full. No questions asked, no fine print.

Fully aligned DKIM, SPF & DMARC Enterprise-grade infrastructure 100% satisfaction guarantee
90%+
Deliverability
100%
Money-Back
100%
DKIM/SPF/DMARC
Get started free Learn more →
Testimonials

Trusted by
GTM EngineersDemand Gen AgenciesCold EmailersCold Email AgenciesSales TeamsEntrepreneursRecruiters

See why hundreds of cold email senders choose winnr.

500+
Companies
5.0
Trustpilot Rating
25%+
Higher Open Rates
"A game changer for email deliverability"
I have a lot of software, and Winnr is by far both the best result and customer service I have experienced. The team is incredibly responsive to help, builds solutions and new features to solve our business problems quickly. The actual software has increased our email open rates by a minimum of 25%, if not much higher!
C
Corey
Australia
Verified on Trustpilot
"Winnr is exactly what I needed"
Winnr is exactly what I needed for my cold email processes. It is a complete and solid platform with excellent assistance and outstanding quality provided at a super competitive price.
A
Alfredo T.
Italy
Verified on Trustpilot
"Nothing but exceptional"
Winnr has been nothing but exceptional when it comes to top notch deliverability through SMTP providers, not only is it a phenomenal platform, but the service is what I found earnt them 5 stars. Any issues encountered, the support would instantly get back to you and get the issue resolved. Highly recommend winnr!
A
Allahyar A.
Canada
Verified on Trustpilot
Read all reviews on Trustpilot →
Pricing

Plans that fit your outreach needs

Start with a free trial, then upgrade when you're ready. No hidden fees, cancel anytime.

Startup
For individual companies and entrepreneurs getting started with cold email.
$69/mo
 
  • 50 email accounts (+$1/each extra)
  • 10 domain slots
  • DKIM, SPF, DMARC setup
  • 2,500 emails/day (75k/mo)
  • Universal mailbox
  • Free domain transfers
  • Full REST API
  • Email support
Domains $1 – $10 each (one-time purchase)
Get Started
Enterprise
For agencies and consultants with higher volume needs and dedicated infrastructure.
$189/mo
 
  • Everything in Startup
  • 200 email accounts (+$1/each extra)
  • 40 domain slots
  • 5 free domain purchases
  • 10,000 emails/day (300k/mo)
  • Dedicated IPs — $20/mo
  • White glove domain setup via Cloudflare, Porkbun, Namecheap & Spaceship
  • Phone, WhatsApp & Slack support
Domains $1 – $10 each (one-time purchase)
Get Started
Affiliate program

Love winnr? Earn 40% recurring commissions.

Refer customers to winnr and earn 40% of their subscription — every month, for as long as they stay.

40% recurring Paid monthly No cap on earnings
Join the program →
New feature

Built-in Email Warming

Build sender reputation and improve deliverability with automated email warming — right inside winnr. No third-party tools needed.

One-Click Enable

Enable warming on any mailbox with a single click. No external accounts to manage.

Real-Time Analytics

Track inbox rate, health score, and daily volume with detailed charts and metrics.

Smart Ramp-Up

Automatic volume ramping that builds reputation gradually for maximum deliverability.

$0.60 /mailbox/month
Learn more →
Support

Frequently asked questions

How to sign up?

Go here and sign up today! You can explore the platform for free and upgrade when ready.

What is winnr?

winnr provides bulk email accounts you can plug into any sales automation software like Apollo, Instantly, or Smartlead and achieve great deliverability at scale. Google Workspace accounts are expensive ($16+/account), have daily limits, take hours to set up, and often get suspended for cold email. winnr solves all of that — 50+ accounts in minutes at a fraction of the cost.

Does winnr integrate with tool XYZ?

Yes. Export your CSV and import into any sales automation tool — Smartlead, Snov, Instantly, Apollo, Lemlist, and more.

Does winnr have an API?

Yes! A full REST API to automate everything — domains, email users, inboxes, and more. Generate a token from your dashboard. Included with every plan at no extra cost. Learn more.

How many domains do I need?

Use our domain calculator to figure out exactly how many you need based on your sending volume.

How do I warm up the accounts?

winnr has built-in email warming — enable it on any mailbox with one click for just $0.60/mailbox/month. Track health scores, inbox rates, and volume right inside the dashboard. No third-party tools needed. Learn more.

How many accounts can I get?

Startup includes 50 accounts, Enterprise includes 200. Additional accounts are $1 each/month.

Do you offer dedicated IPs?

Yes, $20/month on Enterprise. Most senders do great on shared IPs. Dedicated IPs are useful for advanced senders managing multiple mail streams.

Can I use my own domains?

Yes. Bring your own domains and we'll set up DKIM/SPF/DMARC records for you, no matter where you purchased them.

How much are domains?

One-time cost: .com/.net/.co $10 · .dev/.me $8 · .org $5 · .biz $5 · .info $2 · .xyz $1. Or bring your own for free.

Who is winnr for?

Entrepreneurs, sales teams, and demand gen agencies who want to scale cold email properly. winnr is not for spammers — we only work with legitimate businesses.

What is DKIM/SPF/DMARC?

Email authentication protocols required by Gmail and Yahoo since February 2024. We handle all of it — every winnr email has 100% passing, fully aligned SPF, DKIM, and DMARC.

Do you have an affiliate program?

Yes! 40% recurring commissions for 12 months per referral. No cap on earnings, monthly payouts. Learn more.

How do you guarantee deliverability?

Expert-level email authentication, our own infrastructure, and strict anti-spam policies. Follow our best practices and you'll see excellent results. 90% deliverability guaranteed or your money back.

How many emails can I send?

We recommend <50 emails/day per account for optimal deliverability. With 50 accounts on Startup, that's ~2,500/day after proper warmup.

How long does warmup take?

At least 2 weeks, ideally 4 weeks for new domains. The patience pays off when you're delivering thousands of cold emails per day.

Why do I need this?

To send thousands of cold emails with great deliverability without paying $16/account for Google Workspace. The goal: more leads, appointments, and demos.

What's the difference vs Google Workspace?

We run our own infrastructure, just like Google. But 50 accounts takes minutes and costs <$100/mo vs hours of setup and $300–400/mo with Google. No yearly contracts.
Get started today

Start scaling your outreach

Set up 50+ email accounts in minutes. No credit card required to get started.

Free trial No credit card required $1 email accounts