Add-on
Armor Mail
The most expensive email your business will ever receive looks exactly like a real invoice from a real supplier, in a real thread, with one digit changed on the account number. We catch it before anyone sees it.
Invoice fraud is how money actually leaves a Zimbabwean business
A filter is not a policy. The single most effective control against invoice fraud costs nothing: phone the supplier on a number you already had, never one from the email, before changing any banking details. We’ll say this to your finance team for free.
Not dramatic hacking. A supplier’s mailbox gets compromised, the attacker reads months of real correspondence, waits for a genuine invoice, and sends the same one with new banking details:
01 The thread is real
Same people, same subject line, same friendly sign-off. Everything checks out because everything is real except the account number.
02 Procurement pays it
They're doing their job. Nothing looked wrong, because nothing was wrong until the last message.
03 The money is gone
Cross-border, withdrawn within hours, and your bank's recall process is a formality. Recovery is rare.
| What the ten-pack includes | |
|---|---|
| Everything below is included at one price. No setup fee, no per-incident invoice, no surprise line items. | |
| Phishing and credential-harvesting links stripped before delivery | included |
| Business email compromise and fake-invoice detection | included |
| Malware and weaponised attachments blocked | included |
| Display-name and lookalike-domain spoofing caught | included |
| Warnings when a supplier's mailbox looks compromised | included |
| Deployment by API or in-line, with no mail downtime | included |
| Two weeks of tuning against your real mail flow | included |
| Quarantine and releases handled by us, not your staff | included |
| Monthly report of what was caught | included |
| Ten protected mailboxes | $12 / month |
| It costs less than buying it direct | ||
|---|---|---|
| Microsoft's nearest equivalent is Defender for Office 365 Plan 1 at $2 per user a month, which you configure and monitor yourself. | ||
| What you want | Direct price | Tremhost |
| 10 mailboxes | $20 / mo | $12 / mo |
| 25 mailboxes | $50 / mo | $28 / mo |
| 50 mailboxes | $100 / mo | $75 / mo |
| Tuning against your mail flow | your IT team | included |
| Quarantine management | your staff, daily | included |
| 40% less, and managed | Cheaper than the nearest equivalent and considerably cheaper than one fraudulent invoice. The average business-email-compromise payment is measured in thousands of dollars, not tens. | |
| Cloudflare list prices from cloudflare.com/plans. We are a Cloudflare partner and buy at wholesale across thousands of accounts - that is the whole reason we can charge less than you would pay going direct. | ||
Questions people actually ask
1. Does this work with Microsoft 365 and Google Workspace?
Yes, both — and with mailboxes hosted here. Deployment is by API for Microsoft and Google, which means no MX record change and no interruption at all.
2. Will we lose legitimate mail?
That's what the two-week monitor period is for. We tune against your actual mail flow before anything is blocked, and we manage the quarantine ourselves so a false positive is our problem, not your staff's.
3. Is it cheaper than Microsoft's own add-on?
Yes. Defender for Office 365 Plan 1 lists at $2 per user a month. Our ten-pack works out at $1.20 a mailbox, and $1.50 standalone — with the tuning and the quarantine handled for you.
4. We already have spam filtering. Isn't this the same thing?
No. Spam filters catch bulk junk. Invoice fraud arrives as a single, well-written, personally addressed message in a real thread — exactly the kind of mail a spam filter is designed to let through.
5. What if someone clicks anyway?
Tell us immediately. We'll help contain it: reset credentials, check for forwarding rules the attacker set, and look at what else in your mail was touched.
6. How many mailboxes do we actually need to protect?
The ones that receive invoices and the ones that can authorise payment, at minimum. In most businesses that's finance, procurement, the directors and reception. Ten covers a typical small office.
