What Business Email Hosting Really Costs Over Three Years

Ask three providers what business email hosting cost looks like and you will get three per-user figures. They will be roughly similar, and none of them will be your actual bill. What decides the invoice is how a provider counts a user, what happens when a mailbox fills, what you pay for someone who left in March, and what it costs to move at all. This is for the person who signs the invoice, not the person who runs the server.

The per-user price is a unit price, not your bill

Multiplying headcount by the advertised rate gives a number that is wrong in a predictable direction: always too low, and the gap widens with time.

Three variables sit between the unit price and the invoice, and none appears on a pricing page. The count: what the provider treats as a billable seat, which is rarely your payroll. The term: what the price does when your headcount changes mid-commitment. The exit: what you can retrieve, and how easily, when you leave.

Model the organisation rather than the staff list. Write down every address that must receive mail independently, add the mailboxes you will keep for people who have left, and multiply by the rate you will actually be on in eighteen months.

You are billed for seats, not for people

A twelve-person company does not need twelve mailboxes. It needs twelve, plus info@, sales@, accounts@ and careers@, plus something for the bookkeeper who visits monthly. That is seventeen billable objects behind a headcount of twelve.

The distinction that decides the bill is between an alias and a mailbox. An alias delivers into a mailbox that already exists: no storage, no password, no separate login, and almost always free. A shared mailbox is a real mailbox with its own store, permissions and history. Providers differ on whether that is billable, and four shared mailboxes on a twelve-person team is a third again on your invoice.

The trap is the workaround. Teams that discover shared mailboxes are billable make info@ an alias onto the office manager's personal mailbox, or share one login between four people. Both cost more later. The alias sends replies from the wrong address unless send-as is configured, and breaks the day that person leaves. The shared login destroys the audit trail: you cannot say who read a message or sent a reply, and you cannot offboard one person without changing a password four people rely on.

Price shared mailboxes properly at the outset. They move business email hosting cost more than the headline rate does, and paying for them is cheaper than the cleanup.

Storage is the cost that arrives in year three

Fifty gigabytes per user reads as limitless on day one. It is not limitless in year three, because mail growth is wildly uneven across a team.

The mechanism matters. A mailbox grows with the number of messages and, far more sharply, with attachments. Someone in sales or operations receiving signed contracts, plans and photographs can add several gigabytes a year. A colleague sending short internal mail may add a few hundred megabytes. An average consumption figure therefore tells you nothing, because you do not pay by average. You hit the ceiling one mailbox at a time.

What happens at the ceiling catches people out. A full mailbox stops accepting mail. Depending on the provider, senders get a bounce or their message queues and is dropped later. Either way the user does not learn this from a warning banner; they learn it when a customer says they never got a reply. That is a commercial cost which never appears on the invoice.

Two things reduce it. Mailbox storage sold as a pooled quota beats a strict per-user one, because pooling lets eleven light users subsidise the heavy one. And set an archive policy early, moving anything older than about twenty-four months out of the primary mailbox. First confirm archived mail stays searchable from the client, and whether archive storage is included or billed separately. An archive you cannot search is a backup.

Leavers are the line item that appears at month nine

Nobody budgets for the mailboxes of people who no longer work for them, and almost every organisation pays for some. You usually cannot delete a mailbox on someone's last day: handover takes weeks, customers reply to threads that are two years old, and record-keeping obligations often outlast the job. So the mailbox stays. If your provider bills a retained mailbox as a full seat, a thirty-person company with normal turnover can be paying for four or five people who left — a permanent increase in your true cost per user.

There are three ways out, in descending order of preference. Convert the mailbox to a shared mailbox the departing person's manager monitors, which keeps the address live and the history intact. Or export it to a file, delete the account, and set an alias so the address still delivers. Or forward the address to a colleague and delete the rest.

Forwarding is the option to be careful with, because it gets mistaken for retention. Forwarding moves new mail. It does nothing about the years of existing mail in that mailbox, which disappears when the account does. If you have a retention obligation, forwarding does not meet it.

The question to ask before signing is narrow: when a user is deactivated but their mailbox is retained, what is it billed as?

Yearly billing is cheaper until you hire mid-term

The annual discount is genuine and usually worth taking. The trade-off is that it fixes your seat count at the moment you pay, and organisations do not hold still for twelve months.

Hire four people in month seven and you have two options, neither free. You add seats prorated to the existing renewal date, which is tidy but applies the discount to a partial year. Or the new seats start their own twelve-month clock — the outcome to avoid. Within two years you have three renewal dates and no single point at which you can renegotiate or leave.

The second-order problem is that seats rarely go down mid-term. Commit to forty and drop to thirty-two, and you will generally pay for forty until renewal. The rule follows directly: commit annually to the seats you are confident you will still need in twelve months — your floor, not your forecast — and add the rest as you hire.

For context, our own rates: Business Mail is