Cold Email Software That Scales.
Unlimited sending accounts, automatic warmup, and a unified inbox — built for teams who send serious volume.
Everything You Need to Scale Outbound
Unlimited Sending Accounts
Connect as many inboxes as you want. No per-seat fees, no penalty for scaling up.
Automatic Warmup
Every account is warmed up automatically in the background, protecting your sender reputation from day one.
Global Unibox
All replies from every account, every campaign, in one inbox. Never miss a lead buried in a random inbox again.
Powerful Campaigns
Build multi-step sequences with conditional logic, A/B testing, and smart scheduling — all from one place.
Organize and Segment Your Audience.
Import thousands of contacts via CSV, map custom data fields effortlessly, and organize them into dynamic Lead Lists ready for immediate deployment.
Connect Unlimited Sending Accounts.
Securely connect dozens of Microsoft Exchange accounts with a single click using our verified OAuth integration. We automatically handle DNS verification.
Bulletproof Deliverability on Autopilot.
Our background peer-to-peer network detects when your emails land in Junk, moves them to the Inbox to train algorithms, and then auto-archives them to a hidden Exchange folder.
Initial Outreach
Value Prop Follow-up
Multi-Step Sequences with Ultimate Control.
Build drag-and-drop sequences featuring sophisticated Spintax, dynamic variable injection, and automated daily ramp-up limits to keep your domains pristine.
Protect Your Brand and Domain Reputation.
Automatically append tracking subdomains, serve custom branded unsubscribe pages, and maintain a global Do Not Contact (DNC) list that blocks accidental sends.
Unsubscribed
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I'm interested. Can we hop on a quick 10 min call tomorrow?
john@prospect.comAbsolutely, does 2PM EST work for you?
Sent from sales@acme.comOne Inbox to Rule Them All.
Aggregate replies from hundreds of connected accounts into a single real-time feed. Reply to leads instantly, and our system automatically routes it through the correct underlying address.
Built Specifically for Microsoft Exchange
Just connect your Microsoft accounts and you're ready to send. We chose to specialize in Exchange because it's the smartest way to scale cold email — Exchange mailboxes can cost just cents to create, compared to $4-7/mo per inbox on Google Workspace or Outlook. When you're running dozens or hundreds of accounts, that difference isn't small — it's the whole game.
- Add your Microsoft accounts in minutes
- Create mailboxes for cents instead of dollars
- Scale to hundreds of accounts without costs scaling with you
Inbox 1
$0.14/mo
Inbox 2
$0.22/mo
Inbox 3
$0.14/mo
Inbox 4
$0.19/mo
The Most Economical Way to Scale.
We built the most economical cold email software, purpose-built exclusively for the most economical inboxes on the market. By pairing Heyo with Microsoft Exchange, you get the best sending infrastructure for the absolute least amount of money. See how much you save.
See how much you save
Traditional Platforms
Heyo
You save $301.00 every single month.
The Best Sending Platform for the Least Amount.
Starter
- Unlimited sending accounts & warmup
- 50,000 emails/month
- 50,000 contacts
- Global Unibox
- Full campaign builder
- DNC Management
Growth
- Unlimited sending accounts & warmup
- 200,000 emails/month
- 200,000 contacts
- Global Unibox
- Full campaign builder
- DNC Management
Need more volume? Talk to sales
FAQ
Do you support Google accounts?
No — Heyo is built specifically for Microsoft Exchange. This focus is what lets us keep your costs low and your setup simple as you scale.
Why Microsoft Exchange instead of Google Workspace or Outlook?
Exchange mailboxes can be created for cents, while Google Workspace and Outlook typically run $4-7/mo per inbox. When you're sending at scale with dozens or hundreds of accounts, that difference adds up fast — which is exactly why we built Heyo around it.
What does "unlimited accounts" actually mean?
Connect as many sending accounts as you want at no extra cost. Your plan is based on email volume, not the number of inboxes you connect.
How does warmup work?
Every account you connect is automatically enrolled in warmup. Heyo simulates real human sending behavior to build sender reputation before you launch campaigns, and continues protecting it in the background.
How long should I let my accounts warmup for?
We recommend letting your Microsoft Exchange accounts warm up for a minimum of 14 days before launching your first active campaign. This builds a solid sender reputation and ensures maximum deliverability.
Are unsubscribe links required?
Yes. Every campaign automatically includes a compliant unsubscribe link to keep you aligned with CAN-SPAM, GDPR, and general email best practices.
Ready to Send Smarter?
Join teams who switched to the most economical cold email platform.
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