Capacity is bundled, not chosen
A one-person project account is priced like a full seat, even if it stores a few gigabytes and sends ten messages a month.
Business model
Pay for what you store.
Not per seat.
Microsoft and Google charge every person for a large storage quota that almost nobody fills. One Voice Mail charges for the storage an organisation actually uses — with unlimited accounts and every app included. It is roughly half the price for a typical office, and more of the workday is in the box. The suite runs on your server and through free desktop apps for macOS, Windows and Linux.
01 — The problem
Seats buy storage nobody uses.
Microsoft 365 and Google Workspace charge per person, and every seat carries a large storage quota. A Microsoft 365 Business Standard seat includes 1 TB of OneDrive plus a 100 GB mailbox; a Google Workspace Business Standard seat adds 2 TB to a shared pool. Customers pay for that capacity whether they use it or not, then pay again for every account they add.
Most of the quota sits idle
Seats are sold at 110 TB or 200 TB for a 100-person company that commonly stores 3 TB in total. The rest is provisioning, not value.
Adding people is the expensive move
Contractors, part-timers, shared mailboxes and project accounts each become another line item, so organisations ration accounts instead of collaborating.
02 — What customers really use
25 GB per person, not 1 TB.
Neither vendor publishes an average, but the signals point to a few percent of the quota. Backup planning guides assume about 10 GB of mail and 15 GB of files per user: about 25 GB in total. That is about 2% of a Microsoft seat and 1% of a Google seat. Customers pay for 40 to 80 times the storage they use.
25 GBPlanning assumption per person
~2%Of a Microsoft 365 seat
~1%Of a Google Workspace seat
40–80×More storage sold than used
Sources. Google's 2021 change from unlimited storage for schools to a 100 TB pool expected more than 99% of institutions to fit. Microsoft's equivalent change says 99.96% of schools use only part of their storage. The 25 GB planning figure comes from backup practice, not vendor marketing.
03 — The model
Pay per terabyte, unlimited accounts.
One Voice charges for the storage an organisation actually uses, not for people. A company that stores 1 TB pays €210 a month, however many people use it. Billing is on the pooled amount stored, in 100 GB steps of €21. Every employee, part-timer, shared mailbox and project account is included.
Everything is in the price.
Not a mail-only plan, not a document add-on, not a meeting upgrade. The same subscription includes the entire suite:
- Mail, calendar, contacts and notes
- Drive, Docs, Sheets and Slides
- Diagram, Project, Meetings and Meet
- Tasks, When, VoiceNotes and MailerHub
- Video meetings with recording and transcripts
- AI in every app through your gateway
- Admin, migration, backups and support
- Unlimited accounts, no per-seat charge
Fair use: each TB includes AI and meeting capacity for about 35 everyday users. Organisations with heavier meeting or AI use can add capacity packs. Storage-heavy firms such as media companies can choose a per-account plan instead.
04 — Worked example
A 100-person company at 3 TB.
Assume 30 GB per employee, rounded up from the 25 GB planning figure, for 3 TB in total. Prices are list prices with an annual commitment, excluding VAT.
| Microsoft 365 Business Standard | Google Workspace Business Standard | One Voice Mail | |
|---|---|---|---|
| What you pay for | 100 seats × €13.10 | 100 seats × €13.60 | 3 TB × €210 |
| Accounts | 100 | 100 | Unlimited |
| Storage included | 110 TB | 200 TB | 3 TB (all usable) |
| Storage actually used | 3 TB (2.7%) | 3 TB (1.5%) | 3 TB (100%) |
| Per month | €1,310 | €1,360 | €630 |
| Per year | €15,720 | €16,320 | €7,560 |
| Price per TB used | €437 | €453 | €210 |
| Annual saving with One Voice | €8,160 (52%) | €8,760 (54%) | — |
€630One Voice per month
52%Less than Microsoft
54%Less than Google
€8,160–€8,760Saving per year
The 50% saving holds up to roughly 30 GB per person. A storage-heavy organisation, such as a media company, is better served by a per-account plan; One Voice offers that too.
05 — Unit economics
Why it stays profitable.
Serving the example on Hetzner costs about €500 a month, so €630 leaves a margin of about 20%. That is about €4.70 per active person for servers, meetings and AI, plus €8.59 per TB stored. The model is designed to be sustainable at the price customers actually pay — not subsidised by an investor forever.
≈ €500 / month
Compute, storage, backups and bandwidth for the 100-person example on Hetzner.
≈ 20%
At €630 per month, before support and payment costs; every additional terabyte contributes €210.
€4.70 + €8.59
Per active person for servers, meetings and AI, plus per TB stored. Capacity packs cover heavy use.
Two rules keep every customer profitable. Fair use: each TB includes AI and meeting capacity for about 35 everyday users; heavier use buys capacity packs. Where it fits: the storage model wins up to about 30 GB per person; storage-heavy firms are better served by a per-account plan.
06 — Commercial options
Hosted, subscribed, or yours entirely.
We are open to several business models. The right one depends on who should carry the infrastructure, the compliance burden and the capital cost. The storage-based price below is our recommended default, not the only option.
Hosted, storage-based
We run the servers; the customer pays for pooled storage. Unlimited accounts and every app included.
- €210 per TB per month
- Unlimited accounts
- Managed backups and updates
- Approximately 50% below M365/Google
Per-account subscription
A familiar monthly or annual plan for organisations that prefer a predictable seat price over metered storage.
- Per active account
- Hosted or on your cloud
- Annual commitment
- Capacity add-ons
You own it all
A licence and support agreement for organisations that must run everything on their own infrastructure.
- Your hardware or private cloud
- Your data and keys
- Support and update subscription
- No vendor access required
Investors and distribution partners: the model is designed to work at a low price point, with a clear path to margin and several ways to sell it. We are open to hosted, subscription and client-owned structures, and to regional partners who can run the hosted model.
07 — Questions
The short answers.
Pricing is a commercial decision, not a hidden one. These are the questions a finance or IT lead asks first.
Is this really about 50% cheaper?
For a 100-employee company storing 3 TB, One Voice costs €630 per month. Microsoft 365 Business Standard is €1,310 and Google Workspace Business Standard is €1,360 at the reference list prices: 52% and 54% less, or €8,160 to €8,760 a year. The saving depends on storage per person and regional pricing.
What counts as stored data?
Billing is on the pooled amount stored in the plan, measured in 100 GB steps of €21, with a base rate of €210 per TB per month. Accounts are not billed per person, and every employee, part-timer, shared mailbox and project account is free.
Can we run the whole thing ourselves?
Yes. The client-owned model gives the organisation the complete stack on its own infrastructure, with a licence and support subscription. The hosted model is there for teams that would rather not operate mail servers at all.
What about very heavy storage users?
The 50% saving holds up to about 30 GB per person. Media companies and others with large archives can choose a per-account plan; the storage-based plan is not forced on them.
Want the model and the demo?
Ask for the detailed business model, a technical walkthrough or a demo account. Investors are welcome to get in touch directly.