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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 year, 29% 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.