coldBirds logo

Right Now, Your Emails Are Going to Spam. You Just Don't Know It Yet.

Cold email infrastructure that protects your deliverability — on autopilot.

coldBirds provisions isolated mailboxes from Azure, Google Workspace & Outlook — with dedicated IPs, auto DNS, 6-hour health monitoring, and a dedicated VA per account. So you can scale outreach without inbox fires.

Start Now

20 free mailboxes · No credit card · Live in under 4 hours

Trusted by 50+ cold email agencies sending 500K+ emails/month

Why Isolation Is Everything

Most providers pile 50+ mailboxes on shared IPs. When one triggers a blacklist, they all go down. coldBirds doesn't work that way.

Shared IPs (Everyone Else)

50+ mailboxes on 1 shared IP
One bad sender = ALL mailboxes blacklisted
No visibility into inbox placement
You find out when client calls you

Blast Radius

50+ mailboxes

All down. All at once.

coldBirds 1:1:1:3 Isolation

1 workspace + 1 domain + 1 IP per 3 mailboxes
If one burns, only 3 mailboxes affected
6-hour health checks catch problems early
Auto-suspend before domain reputation damage

Blast Radius

3 mailboxes

Contained. Everyone else keeps sending.

You've always suspected shared IPs were killing your inbox placement rates. You were right.

The math: 200 mailboxes on shared IPs = all 200 at risk from a single bad sender. 200 mailboxes on coldBirds = max 3 affected, the rest keep sending.

How coldBirds Works

From zero to fully isolated, monitored infrastructure in under 4 hours — not weeks.

Step 012 minutes

Tell us how many mailboxes you need

Choose your volume (5 to 1,000+). Pick your provider mix — Azure, Google Workspace, or Outlook. That's it.

Step 02Under 1 hour

We provision the full infrastructure

coldBirds creates isolated workspaces: 1 domain + 1 dedicated IP per 3 mailboxes. DNS (SPF, DKIM, DMARC) configured automatically. Warmup starts immediately.

Step 03Same day

Your dedicated VA takes over

A trained virtual assistant manages your dashboard, handles onboarding, and provides proactive support. Responds in under 2 hours. Included free with every account.

Step 0424/7, ongoing

We monitor. You scale.

Every 6 hours, we check inbox placement across all mailboxes. Degraded mailboxes auto-suspend before damaging your domain. You focus on closing deals.

Ready to see it in action?

Start Free Trial

What coldBirds Actually Does That Nobody Else Can

TRUE INFRASTRUCTURE ISOLATION

1 dedicated IP per 3 mailboxes. If one burns, only 3 go down — not your entire account. Each workspace is fully isolated with its own domain and dedicated IP. No other provider offers 1:1:1:3 isolation.

6-HOUR HEALTH MONITORING

Every 6 hours we check inbox placement across every mailbox. If deliverability drops below threshold, auto-suspend kicks in within minutes — before your domain reputation takes damage. No manual checking.

AUTO DNS CONFIGURATION

SPF, DKIM, DMARC plus domain redirections to your primary domain — configured automatically via Cloudflare in under 60 seconds per domain. Zero manual DNS work. Zero misconfigurations. Zero typos.

BULK WARMUP + 3-TIER CASCADE

Apply warmup across all mailboxes at once with 11 configurable parameters. 3-tier cascade (global → customer → per-mailbox) gives you granular control. Warm 200+ mailboxes simultaneously.

We Provision Your
Mailboxes

You tell us how many mailboxes you need. We provision them from Azure, Google Workspace, and Microsoft Outlook — with dedicated IPs, proper isolation, and auto-configured DNS. No BYO accounts. No shared infrastructure.

Start Free Trial
Google Workspace
Google Workspace
Microsoft Outlook
Outlook
Microsoft Azure
Azure

Connects with your sequencer in one click

Instantly logo
Instantly
Smartlead logo
Smartlead
PlusVibe logo
PlusVibe
Email Bison logo
Email Bison
Woodpecker logo
Woodpecker
Lemlist logo
Lemlist
Reply.io logo
Reply.io
Mailshake logo
Mailshake
QuickMail logo
QuickMail
Saleshandy logo
Saleshandy

One Dashboard. Zero Tool Juggling. Full Lifecycle Control.

This is the actual coldBirds dashboard. Not a mockup. Not a concept. The real product your VA manages for you every day.

app.coldbirds.com/dashboard
coldBirds dashboard — Health MonitoringcoldBirds dashboard — Mailbox FleetcoldBirds dashboard — Warmup ControlcoldBirds dashboard — Domain AnalyticscoldBirds dashboard — Reply ManagementcoldBirds dashboard — Client OnboardingcoldBirds dashboard — Booking Calendar

See degradation before your clients do.

Every 6 hours, coldBirds checks inbox placement across your entire fleet. Degraded mailboxes auto-suspend before your domain reputation takes a hit. You'll never find out from a client again.

This is the real product. Not a mockup. Want to see your use case?

Or Start Free Trial — 20 Mailboxes

15-minute walkthrough. We'll show you YOUR use case, not a generic demo.

What happens after you switch

Imagine Opening Your Dashboard to This.

85%+ inbox placement. Zero blacklisted domains. Pipeline compounding month after month. Your infrastructure running silently in the background while you focus on what you started your business to do — close deals.

Day 1

Mailboxes provisioned, DNS configured, warmup started

Day 14

First mailboxes clear warmup threshold, health monitoring active

Day 30

95%+ inbox placement rates across your fleet — spam is a memory

Day 90

Zero domains lost. Reply rates climbing, clients renewing

Day 365

The infrastructure you stopped thinking about. It just works.

95%+

Inbox placement rate

Across all mailboxes, sustained

0

Domains lost to blacklists

Auto-suspend catches issues before damage

58:1

ROI on infrastructure

$550/mo in → $32K/mo pipeline out

You built your agency to scale outreach and book meetings — not to debug DNS records at midnight. coldBirds gives you back the freedom to do what you're great at.

Trusted by Agency Operators

Here's what people running cold email at scale say about coldBirds.

83%

Avg spam reduction

<4 hrs

Avg setup time

15 hrs/week

Avg time saved

18% → 3%Spam rate drop
We migrated 200+ mailboxes to coldBirds. Our spam rate dropped from 18% to under 3% in the first month. The isolation model is the real deal.

200+ mailboxes · 12 clients · $3.2M pipeline generated

Jake R. headshot

Jake R.

Founder, Outbound Agency

15 hrs/wkTime saved
The dedicated VA alone saved us 15 hours a week. DNS, onboarding, troubleshooting — all handled. I just focus on selling now.

350 mailboxes · 20+ clients · Scaled from 50 to 350 in 2 months

Priya M. headshot

Priya M.

CEO, 8-person Lead Gen Agency

0 domainsLost in 6 months
I used to lose 2–3 domains a month to blacklists because of shared IPs. Since switching to coldBirds, zero domain losses in 6 months.

120 mailboxes · 8 SDRs · $1.8M influenced pipeline

Marcus D. headshot

Marcus D.

Director of Sales Dev, B2B SaaS

Verified results from active coldBirds customers. Full case studies available on request.

Simple, Transparent Pricing

No hidden fees. No annual contracts. Scale up or down anytime.

Think of it as an investment, not a cost

50 mailboxes (Starter)

$175/mo spent

~$8,000/mo pipeline

46:1 return

200 mailboxes (Growth)

$550/mo spent

~$32,000/mo pipeline

58:1 return

500 mailboxes (Enterprise)

Custom spent

~$80,000/mo pipeline

Scale unlocked

Based on average cold email reply rates and meeting-to-pipeline conversion across coldBirds customers.

Starter

For solo operators getting started

$3.50/mailbox/month

5–49 mailboxes

  • Azure & Outlook mailboxes
  • Auto DNS (SPF/DKIM/DMARC)
  • 6-hour health monitoring
  • Bulk warmup
  • 1 sequencer integration
  • Email support
Most Popular

Growth

For agencies scaling outreach

$2.75/mailbox/month

50–499 mailboxes

  • Everything in Starter, plus:
  • Google Workspace mailboxes
  • Dedicated VA (included free)
  • 4 sequencer integrations
  • Domain analytics & heatmaps
  • Unified reply management
  • Booking calendar
  • Priority support

Enterprise

For agencies with 500+ mailboxes

Custom

500+ mailboxes

  • Everything in Growth, plus:
  • Volume discounts
  • Custom isolation rules
  • Dedicated account manager
  • SLA guarantees
  • Custom integrations
  • Phone support

All plans include a 20-mailbox free trial. No credit card required. Month-to-month billing. Cancel anytime.

What others charge extra for, we include free

FeaturecoldBirdsOthers
Dedicated VA / Account ManagerFree$379/mo (Smartlead)
Auto DNS (SPF/DKIM/DMARC)FreeManual / Not offered
6-hour health monitoringFreeNot available
Dedicated IP isolation1 IP per 3 mailboxesShared IP pool

Start with 20 Free Mailboxes

No Credit Card. No Commitment. Full Infrastructure.

Get 20 Azure mailboxes with dedicated IPs, auto DNS, health monitoring, and a dedicated VA — free for your first month. See the deliverability difference before you pay a cent.

$490+/mo value — yours free for 30 days
  • 20 mailboxes, fully provisioned and warmed
  • Dedicated IP isolation (1 IP per 3 mailboxes)
  • Auto DNS: SPF, DKIM, DMARC configured
  • 6-hour health monitoring active from day 1
  • Dedicated VA assigned to your account
  • No credit card required — ever
Start Free Trial

We onboard 10 new teams per month to maintain quality. Spots fill up.

If you're sending fewer than 100 emails/day and happy with your current setup — you probably don't need this. But if deliverability keeps you up at night, this trial was built for you.

Confident professional happy with coldBirds results

Zero Risk. Full Control.

We designed coldBirds so you never feel locked in.

If you're not seeing better deliverability within 30 days, we'll extend your trial — free — until you do. No questions asked.

30-day deliverability guarantee

See measurable inbox improvement in 30 days or we extend your trial free. No fine print.

Your domains stay yours

We provision them, but you own them. Export and transfer anytime — we'll even help you migrate.

No annual contracts

Month-to-month billing only. Cancel anytime — no penalties, no hoops, no retention calls.

Start small, scale when ready

Begin with 5 mailboxes for one client. Add 500 more when you're confident.

Free 20-mailbox trial

Test our Azure infrastructure for a full month. No credit card required. Full features unlocked.

Full data portability

Export mailbox credentials, domain records, and 90 days of analytics data at any time. Your data is yours.

Your Best Quarter Starts with
Better Infrastructure.

The agencies booking the most meetings aren't writing better subject lines — they're running isolated, monitored infrastructure that never lets an email hit spam unnoticed. That's what coldBirds gives you.

Day 1: mailboxes provisioned, DNS configured, warmup started. Day 14: first mailboxes clear warmup threshold. Day 30: 95%+ inbox placement rates across your fleet. Day 90: zero domains lost. Day 365: the infrastructure you stopped thinking about.

If you're happy with shared IPs and unmonitored mailboxes, this isn't for you.

50+ agencies already made the switch this quarter
Start Free Trial — 20 Mailboxes

No credit card required. Your domains stay yours. Cancel anytime.

We accept 10 new teams per month. Don't wait until next month's cohort.

Email deliverability illustration