Infrabox

Pricing calculator

Put your numbers into the price list.

Two inputs decide almost everything: how many domains, and how many Google Workspace mailboxes on each. What follows is the published price list doing arithmetic — no lead capture in front of the number, and no “contact us” where a figure should be.

mailbox
$3.79 / mo
domain
Per TLD, per year
markup
$6 or $10
volume tiers
None
sign-up needed
None

Arithmetic on the published price list. The binding total is quoted at checkout.

Estimate your setup

Your setup

How many sending domains you want to register.

The unit price does not change with volume.

Domain

Pre-warmed domains carry their own registration price.

Age at purchase

Domains 12 months or older carry the higher platform markup.

Estimate

9 mailboxes across 3 domains

$89.61first month

Then $34.11 every month, with the domains due again next year.

$3.79 / mailbox.comNewly registered+$6 markup

Mailboxes

9 × $3.79 per mailbox per month

$34.11/mo

Domains, first year

3 × ($12.50 registration + $6 markup)

$55.50

First month

Domains billed for the year, mailboxes monthly.

$89.61

First twelve months

Twelve monthly mailbox charges plus the domains.

$464.82

Get a real total

This is arithmetic on the published price list, not a quote. Registrar prices move, and availability and recorded age vary per name, so the exact total for the specific domains you pick is shown at checkout before you commit to anything.

Need more than 250 domains, or a shape this does not cover? Tell us what it looks like and we will price it properly.

01the arithmetic

The arithmetic

How the number above is built.

Four operations, in this order. If you would rather do it on paper, these are the same four steps.

  1. 01

    Count the mailboxes

    Domains multiplied by mailboxes on each. Every Google Workspace mailbox is $3.79 a month — the tenth and the thousandth cost the same, because the eight provisioning steps are the same work either way.
  2. 02

    Price the domains

    Registration is per TLD, per year. A pre-warmed domain has its own registration figure rather than a surcharge bolted onto the standard one.
  3. 03

    Add the platform markup

    A flat $6 per domain, or $10 once the domain is 12 months or older. Aged domains cost more because the history is what is being bought.
  4. 04

    Split it by billing period

    Mailboxes recur monthly, domains yearly. That is why the estimate shows a first month and a first twelve months rather than one blended figure that flatters whichever we wanted to look small.

Worked example

5 .com domains, newly registered, with 3 mailboxes on each.

Mailboxes: 15 × $3.79
$56.85 / month
Domains: 5 × ($12.50 + $6)
$92.50 / year
First month
$149.35
Every month after
$56.85

02what you pay for

What you are paying for

The line items, and the one that is not on the invoice.

What the mailbox price covers

The Workspace mailbox and the whole provisioning run behind it: admin account, MX, SPF and DMARC, domain verification with Google, DKIM, and a sending credential verified before hand-off.

Why there are no tiers

No volume band and no seat minimum on this list. Provisioning the two-hundredth mailbox costs us the same eight steps as the second, so it costs you the same too.

The cost people forget

Not the mailbox — the hours. Nameserver delegation, a mistyped SPF include, a DKIM key nobody switched on because it lives three menus deep. None of that appears on an invoice, and it is what actually gets expensive.

What it does not cover

Your sending tool. Infrabox is the infrastructure underneath a sequencer, not a replacement for one, so whatever you pay your sequencer is unchanged and separate.

The full price list, including every TLD and the pre-warmed column, is on the pricing page.

03questions

Questions

Before you get to checkout.

Is this a quote?

No. It is the published price list with your numbers put into it. The registrar’s price for a specific name, whether that name is even available, and how old it actually is are things we only know once you pick it — so the binding total appears at checkout, before you commit to anything.

How many mailboxes should I put on one domain?

We are not going to invent a number for that. It depends on your volume per mailbox and how much risk you want concentrated on a single domain, and any figure quoted as a rule on a pricing page is somebody’s guess dressed up as guidance.

The mechanical part we can tell you: the price is per mailbox, not per domain, so spreading the same mailbox count across more domains costs you more domains and exactly the same mailbox bill.

Why is the domain a separate line?

Because it is a separate purchase on a separate billing period. A domain is registered for a year at a price the registrar sets per TLD; a mailbox is a monthly subscription. Blending them into one “per mailbox” number would make the mailbox look more expensive than it is and the domain look free.

What is the difference between pre-warmed and aged here?

Two different controls because they are two different things in our pricing. Pre-warmed selects a different registration price for the domain. Age changes the platform markup — $6 under 12 months, $10 at or over it.

Do I get a discount for buying a lot?

Not on this list — the unit price is the unit price. If your volume is large enough that you want to talk about it, tell us the shape of it and you will get a real answer rather than a banner promising one.

How long until the mailboxes actually work?

Longer than a pricing page usually admits. Seven of the eight provisioning steps are quick; domain verification with Google is not, because it waits on DNS propagation and Google’s own checks. The step-by-step page gives the typical duration of each and is honest about which one dominates.

Want the real total for your list?

Send us the domains and mailbox counts you have in mind and we will price them properly rather than approximately.