Cold Email Infrastructure Built for Scale.
Stop paying $5–$7/mo per inbox. Spin up unlimited custom-domain inboxes with automated DNS, enterprise Microsoft deliverability, and 1-click export to your favorite sending tools.
Purpose-Built for High-Volume Outbound
Unlimited Inboxes
Create 10, 50, or 200 inboxes across your domains. Pay one flat rate for volume rather than per-mailbox fees.
1-Click DNS Automation
Connect your domains in seconds. SPF, DKIM, DMARC, and MX records are automatically generated and verified with zero manual copy-pasting.
Microsoft Enterprise Deliverability
All outbound mail routes through premium Microsoft enterprise IP pools, guaranteeing high inbox placement with Google and Outlook.
1-Click Sync & Universal Export
Sync inboxes directly to Heyo Email via API with warmup activation, or export pre-formatted CSVs for Instantly, Smartlead, and Apollo.
Zero Manual DNS Setup.
Add your custom domains and our system configures SPF, DKIM, DMARC, and MX records automatically in ~3 seconds. No manual DNS record creation, no waiting hours for setup.
Pristine Inbox Placement.
Cheap VPS IPs get flagged instantly. Heyo Infra routes outbound mail through Microsoft's enterprise infrastructure, giving your cold outreach the same deliverability trust as Fortune 500 companies.
Batch Generator in 10 Seconds.
Need 50 inboxes across 5 domains? Choose your naming format (e.g. first.last@domain.com), set passwords automatically, and generate your entire fleet in seconds.
Growth Team (Heyo Email)
Warmup Schedules Active
1-Click Direct Sync to Heyo Email.
Connect your Heyo Email workspace with a single click. Inboxes are instantly provisioned in your sending dashboard and automatically enrolled in warmup with custom ramp schedules.
Export for Any Cold Email Tool.
Use your inboxes wherever you want. Download universal CSVs pre-formatted for 1-click bulk import into Instantly, Smartlead, Apollo, or Lemlist with full IMAP and SMTP support.
We'd love to see a demo! Can you send a calendar link?
lead@prospect.comAwesome, here's my link: calendly.com/team
Received in Webmail & IMAPFull IMAP Access & Webmail.
Receive replies and warmup traffic without friction. Check any mailbox directly in browser webmail or connect via standard encrypted IMAP (Port 993).
Built on Enterprise Microsoft Infrastructure
Stop worrying about burning shared IP addresses or getting blacklisted by spam filters. Heyo Infra provisions your inboxes on dedicated enterprise relay pools backed by Microsoft, giving your business maximum domain protection and optimal deliverability.
- Automated SPF, DKIM, and DMARC verification
- Create unlimited inboxes for cents instead of $6/mo
- Scale to hundreds of inboxes without scaling your bills
Inbox 1
10/10 Inboxing
Inbox 2
10/10 Inboxing
Inbox 3
10/10 Inboxing
Inbox 4
10/10 Inboxing
The Most Economical Way to Scale Inboxes.
Google Workspace and Microsoft 365 charge $6.00 to $7.20 for every single mailbox. With Heyo Infra, you pay one predictable flat monthly rate for unlimited inboxes. See your exact monthly savings below.
See how much you save with flat-rate infrastructure
Google / Microsoft 365 Direct
Heyo InfraYou save $300.00 every single month.
Simple, Flat-Rate Inbox Pricing.
No per-seat fees, no per-inbox charges. Pick your sending volume.
Starter
For solo founders and growing cold outreach teams.
- Unlimited Inboxes & Mailboxes
- 50,000 Outbound Sends / month
- Automated DNS Setup (SPF, DKIM, DMARC)
- 1-Click Direct Sync to Heyo Email
- Universal CSV Export (Instantly & Smartlead)
- Centralized IMAP & Webmail Storage
Growth
For scaling lead generation agencies and sales teams.
- Unlimited Inboxes & Custom Domains
- 200,000 Outbound Sends / month
- Priority Enterprise Deliverability Pools
- 1-Click Direct Sync to Heyo Email
- Universal CSV Export (Instantly & Smartlead)
- Automated DNS Health Monitoring & Alerts
Sending more than 200,000 emails/month? Contact our infrastructure team
Frequently Asked Questions
How do "unlimited inboxes" work?
Unlike Google Workspace or Microsoft 365 where you pay $6–$7 per individual mailbox, Heyo Infra charges a flat monthly rate based purely on outbound send volume. You can spin up 10, 50, or 200 inboxes without your bill increasing.
Why is Heyo Infra so much cheaper than Google or Microsoft direct?
Traditional platforms bundle expensive SaaS licenses (Word, Excel, Docs, 1TB cloud storage) with each seat. Heyo Infra strips away the software bloat and gives you pure, high-deliverability cold email inboxes engineered exclusively for outbound sending.
How long does domain setup and DNS take?
Setup is instantaneous. When you enter your domain, our automated system injects SPF, DKIM, DMARC, and MX records automatically in ~3 seconds with zero manual configuration.
Can I use these inboxes with Heyo Email, Smartlead, or Instantly?
Yes! If you use Heyo Email, you can push inboxes directly into your workspace with 1 click. If you use Instantly, Smartlead, or Apollo, you can download a universal pre-formatted CSV and upload it in seconds.
How do I access replies and inbound mail?
All replies arrive in your cold email sender (Heyo Email, Instantly, Smartlead) via IMAP. You can also log into our browser webmail anytime to view your inboxes directly.
Ready to Scale Your Cold Email Infrastructure?
Join teams generating unlimited inboxes for a fraction of the cost.
Get Started