Inframail

Flat rate Microsoft mailbox infrastructure with no per inbox charge.

From $147/mo

Visit Inframail (opens in a new tab)

Bottom line

Microsoft-backed cold email inboxes on a flat $147/mo unlimited plan. No per-mailbox fee.

Stands out for: Unlimited inboxes on your domains for a flat monthly fee, with SPF, DKIM, and DMARC set automatically.

Watch out for: Microsoft-backed infrastructure, not Google Workspace. You still need a sequencer such as Instantly or Smartlead to send.

Overview

Inframail is cold-email infrastructure that provisions Microsoft-backed inboxes on your own domains. SPF, DKIM, and DMARC are configured automatically. The core plan is $147 per month with unlimited inboxes and no per-email fee. Separate Google Workspace and Microsoft 365 reseller lines are listed at $600 per month with a $3 per-inbox rate. A done-for-you campaign setup is $3,497 once plus $499 per month. Inboxes export to Instantly, Smartlead, and ReachInbox.

Agencies pick the $147 plan to stop paying per mailbox as volume grows. You still send from a sequencer; Inframail is the inbox, domain, and authentication layer. A money-back guarantee is stated, which is not a trial. There is no printed free trial. This is Microsoft-backed infrastructure, so Google-first teams should look at a Workspace reseller instead.

Who it's for

Best for

  • Agencies that want unlimited Microsoft inboxes
  • Teams tired of per-mailbox Google bills
  • Senders who will bring or buy domains
  • Shops connecting inboxes to Instantly or Smartlead

Not ideal for

  • Buyers who need Google Workspace inboxes in the $147 plan
  • Teams that want a free trial before paying

Key features

Microsoft 365. Official Microsoft 365 / Outlook mailbox provisioning for outbound sending.

Azure tenant. Isolated Azure / Microsoft tenant infrastructure for mailbox hosting.

Provider coverage. No Google Workspace option.

Pricing model. Flat pricing favours teams running high inbox counts.

Pricing

Starting price $147/mo
Free tier –
PlanPriceWhat you get
Inframail core$147/moUnlimited Microsoft-backed inboxes, no per-email fee
Google Workspace or Microsoft 365$600/moListed with a $3 per-inbox rate
Done-for-you campaign setup$3,497 oncePlus $499/mo

Core Inframail plan is $147/month with unlimited Microsoft-backed inboxes and no per-email fee. Separate Google Workspace and Microsoft 365 lines are listed at $600/month with a $3 per-inbox rate. Done-for-you campaign setup is $3,497 once plus $499/month. Money-back is not a trial. Confirm current terms on the vendor site.

Checked 19 Sep 2026. Vendors change prices without notice.

See current pricing on Inframail (opens in a new tab)

Is Inframail expensive?

Inframail starts at $147/mo. We list 36 deliverability tools in total. 4 have a free tier, and those with a public price typically start around $10 a month.

  • 1 quote-based
  • 4 free tier
  • 35 public price

Worked out automatically from every deliverability listing, so it updates as the directory changes.

Pros and cons

Pros

  • $147/mo unlimited Microsoft inboxes
  • Automated SPF, DKIM, and DMARC
  • No per-email sending fee

Cons

  • Core plan is Microsoft, not Google
  • No published free trial
  • You still pay for a sequencer

Integrations

Instantly Smartlead ReachInbox

From the vendor's own site (opens in a new tab).

What's new at Inframail

No updates logged yet. Follow Inframail and we will email you when it announces something new or its starting price changes.

Follow Inframail

Get an email when Inframail ships a new feature, posts release notes or changes its starting price. Only when something changes, and you can stop in one click.

How Inframail compares

See all Inframail alternatives, with what each one does differently and a head to head for every pairing.

ToolFree tierFromMCPAPICompare
Inframail (this tool) –$147/mo––
Mailreef Dedicated server with unlimited inboxes from $240/mo plus send fees. –$240/mo–✓ Compare
Maildoso Per-mailbox SMTP from $75/mo if you want rotating IPs. –$75/mo✓✓ Compare
Infraforge Private dedicated IPs from $4 per slot with a REST API. –$4/mailbox/mo–✓ Compare
Mailforge Shared-IP mailboxes from $3 if you skip unlimited. –$3/mailbox/mo–– Compare
Mailreef

$240/mo API

Dedicated server with unlimited inboxes from $240/mo plus send fees.

View listing Compare with Inframail

Maildoso

$75/mo MCP API

Per-mailbox SMTP from $75/mo if you want rotating IPs.

View listing Compare with Inframail

Infraforge

$4/mailbox/mo API

Private dedicated IPs from $4 per slot with a REST API.

View listing Compare with Inframail

Mailforge

$3/mailbox/mo

Shared-IP mailboxes from $3 if you skip unlimited.

View listing Compare with Inframail

Your next step

Shortlisting Inframail?

CompareInframail vs MailreefPrice, free tier, MCP and API side by side, on one page.Free toolSPF, DKIM and DMARC checkerType a domain to see if MX, SPF, DKIM and DMARC are set up for cold email, with the fix for anything missing.Ready?Visit InframailSee current plans and pricing on the vendor site. (opens in a new tab)

Still deciding? Ask an AI assistant about Inframail.

ChatGPT (opens in a new tab)Claude (opens in a new tab)Grok (opens in a new tab)

Frequently asked questions

What is Inframail?
Flat rate Microsoft mailbox infrastructure with no per inbox charge. No Google Workspace option. Inframail is listed under Deliverability in the Work Insiders directory.
Is Inframail free?
No. Inframail is a paid product.
Does Inframail have an MCP server or API?
No. Inframail does not currently list an MCP server or a public API.
What are alternatives to Inframail?
Inframail alternatives worth comparing are Mailreef, Maildoso, Infraforge and Mailforge. The comparison table above shows free tier, starting price, MCP and API side by side.