Mailboxes

Every provider you need, under one roof

Google Workspace, Microsoft 365, Azure, and custom IMAP/SMTP inboxes — provisioned on US IPs, authenticated automatically, ready in minutes.

Google
Workspace
US-IP
Microsoft
365
US-IP
Azure
Enterprise
US-IP
IMAP
/ SMTP
US-IP

One provider is a single point of failure

When a provider tightens filters or flags a batch, a single-provider setup takes your whole operation down with it. Diversification isn't a nice-to-have — it's how serious senders protect deliverability.

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Mailbox Calculator

How many mailboxes do you need?

Size mailboxes, domains and monthly cost for your outreach — and see what you save vs typical infra resellers.

How many emails each contact receives in your sequence

15 emails/day — Safe
3 mailboxes/domain — Optimal
That's 2,045 emails/day
45,000 total emails/month (Mon–Fri)
You'll need
46
domains
137
mailboxes
Google infra$2.50/mailbox
Cost / 1k emails$7.61
DeliverabilityHighest
Monthly total$342.50
Savings with Icemail
$137/mo
$1,644 a year29% lower infra cost
Competitor
$479.50/mo
Icemail
$342.50/mo

Apples-to-apples vs Inframail, Zapmail, Mailreef · Google infra ($3.50 / mailbox).

Get started — order your inboxes
Compare all providers · 45,000 emails/mo
✦ Recommended
Google
Highest
$342.50/mo
Mailboxes137
Domains46
Cost / 1k$7.61
Daily warmup2,045
Microsoft
High
$342.50/mo
Mailboxes137
Domains46
Cost / 1k$7.61
Daily warmup2,045
Lowest cost
Azure
Good · built for scale
$150/mo
Mailboxes410
Domains5
Cost / 1k$3.33
Daily warmup2,045
IMAP/SMTP
Good · isolated IP
$162/mo
Mailboxes82
Domains9
Cost / 1k$3.60
Daily warmup2,045
Monthly cost
Google
$342.50
Microsoft
$342.50
Azure
$150
IMAP/SMTP
$162
14-day warmup timeline
Live at full volume

Based on 22 weekday sending days/month and provider daily limits. Estimate only.

Bulk creation with AI autofill

Spin up hundreds of mailboxes at once; AI fills names, signatures and details so setup scales as fast as you do.

Bulk create
Mailboxes to create
250
AI autofill preview
sarah.chen@reach-icemail.io
j.martinez@reach-icemail.io
+ 248 more…

US IPs as standard

Every mailbox sends from a US-based IP that inboxes trust — across Google, Microsoft and Azure.

US-based sending IPs
Every mailbox sends from a US IP that inboxes trust.

Unlimited free replacements

A flagged or underperforming mailbox is replaced free — campaigns never stall.

Replace mailbox
flagged.box@icemail.io
fresh.box@icemail.io
Replacement included — no extra charge.
11.5M+
Mailboxes created
99.2%
Inbox placement
4+
Providers supported

"Mixing Google and Microsoft on Icemail gave us a deliverability floor we'd never had."

Approved customer quote — Agency

Google AND Microsoft AND more — at $2.5

Most providers lock you into one ecosystem or charge a premium for breadth. Icemail gives you every major provider at a flat $2.5 per mailbox.

Single-provider competitors
  • One ecosystem, one risk
  • Premium pricing for breadth
  • Re-platforming to add a provider
Icemail · $2.5/domain/month
  • Google, Microsoft, Azure, IMAP
  • Flat $2.5 across every provider
  • Mix providers in one campaign

Frequently asked questions

Diversify your sending. Protect your inbox.