Proton Mail Business Pricing: Cost Per User by Plan

Proton Mail business pricing: the short answer#

Proton sells business email per user, per month, on three self-serve plans: Mail Essentials, Workspace Standard and Workspace Premium. Enterprise is quoted by sales. You can pay monthly or yearly, and yearly is cheaper per month. Every plan has a 14-day free trial and a 30-day money-back guarantee. The current per-user rate for each plan is on Proton's business pricing page.

We don't copy Proton's dollar figures onto this page. They change with the billing toggle, the currency selector and Proton's own promotions, and a stale number here would cost you more than a click to the source. What this page adds is the part the pricing page leaves to you: what each plan actually includes, where the bill quietly grows, and how to work out the real cost for your team.

Proton business plans and features at a glance#

Checked against proton.me/business/mail/pricing and proton.me/business/plans on 27 October 2026. The price column tells you where the number lives rather than repeating it.

Proton Mail Essentials: storage, limits and what's included#

Mail Essentials is the entry business plan and the one most small teams should price first. It gives each user 15 GB of storage, 10 addresses, and up to 3 custom domains across the organization, with a catch-all address, unlimited filters, folders and labels, password-protected email and Proton's migration tool.

It is no longer a mail-and-calendar-only plan. As of October 2026 Proton's comparison table also lists Drive file sharing with the document and spreadsheet editor, Pass, a VPN with one connection per user, Meet and Lumo on Essentials. The limits are what separate it from Workspace Standard: meetings cap at 50 people and one hour, only one meeting can run at a time, Lumo prompts are limited, and email groups and custom branding are not included.

Proton's own advice is that a team that only needs email and calendar can start here. If 15 GB per person covers your mail and files, Essentials is the honest comparison against other mail-first providers.

What changes at Workspace Standard and Workspace Premium#

Workspace Standard is the plan built to replace Google Workspace or Microsoft 365. The jump that matters is storage: 1 TB per user instead of 15 GB, which is what makes Drive usable as a team file store. It also raises custom domains to 15, addresses to 20 per user, Meet to 100 people with 24-hour meetings and recording, and the VPN to 10 connections. Email groups, team vaults in Pass, custom workspace branding and the Proton Sentinel account-protection program arrive here too.

Workspace Premium adds 3 TB per user, 20 custom domains, 250-person meetings and data retention policies. It is also the only self-serve plan that includes Proton Scribe, the in-composer writing assistant, and unlimited Lumo prompts with extended chat history. On Essentials and Standard, Scribe is an add-on with a free trial.

Enterprise is a custom plan through sales. Proton does not publish its limits, so treat any figure you see for it elsewhere as a quote someone else got.

Five-person example: working out the real cost#

The arithmetic is short. Take the per-user monthly rate for your billing cadence from Proton's page, multiply by the number of seats, then by 12. Five seats on yearly billing is the yearly per-user rate times 60. Do the same sum with the monthly toggle and the difference is what committing for a year saves you.

The harder part is knowing what that total replaces. Take a five-person consultancy on one custom domain, moving off Google Workspace for privacy reasons. If they price Workspace Standard, the bill covers more than mail, so compare it line by line.

A team already paying for a password manager, extra cloud storage and a VPN often finds Workspace Standard comes out close to, or below, the sum of the parts. A team that only needs mail should be pricing Mail Essentials, and comparing it to other mail-first plans rather than to a full suite.

Proton personal vs business plans#

Proton Unlimited is a personal plan, not a cheaper Workspace Standard. It is one user with 500 GB of storage, 15 extra addresses, 3 custom domains and the VPN, Pass and Drive bundle. There is no organization to add colleagues to, and no admin panel.

Workspace Standard is priced per user and comes with the admin panel, where you add and remove users, allocate storage and VPN connections, and set organization-wide controls. For a solo founder on one domain, Unlimited can be enough. Once a second person needs their own mailbox on your domain, you are in business-plan territory. Personal plan costs are covered in is Proton Mail's paid plan worth it.

Proton Mail vs cheaper business email providers#

Most cheaper business email is mail-first: you pay per user for a mailbox on your domain and buy storage, passwords and video elsewhere. Against those, the fair Proton comparison is Mail Essentials, and the question is whether zero-access encryption is worth the gap to you.

For the numbers on the usual alternatives, see Google Workspace cost per user, Fastmail cost per user, Zoho Mail cost per user, and Proton Mail vs Tuta pricing if you are choosing between the two encrypted providers.

Hidden costs: what quietly changes the bill#

• Billing cadence. Proton's page defaults to yearly. Comparing Proton's yearly rate with another vendor's monthly rate makes Proton look cheaper than it is. Match the cadence first.
• IMAP needs Proton Bridge. To read Proton mail in Outlook, Apple Mail or Thunderbird, each user installs Bridge, a desktop app that runs a local mail server on their computer and decrypts mail there. It comes with paid plans, but it is a per-machine install to plan for in onboarding. Sending from printers, CRMs or websites is different: Proton's SMTP submission feature works server-side with tokens, for custom-domain addresses on paid plans, and it can only send.
• Storage is shared across apps. The 15 GB, 1 TB or 3 TB per user covers mail, Drive files and Docs together, and admins allocate it from the admin panel. A team using Drive as its file server fills it faster than a mail-only estimate suggests.
• Scribe is extra below Premium. If you want Proton's writing assistant on Essentials or Standard, it is an add-on. Price it in rather than assuming AI drafting comes with the plan.
• Essentials meeting limits. One-hour meetings and one active meeting at a time are fine for quick calls and awkward for client workshops. If Meet would replace a paid video tool, you may need Standard.

Which Proton plan to pick#

1. 1

   You want private email for a small team: Mail Essentials

   If zero-access encryption is the reason you are here and 15 GB per person is enough, start with Essentials. Proton has built harder on zero-access, end-to-end encrypted mail than we have, and if the provider being unable to read your stored mail is a hard requirement, Proton is the right call.

2. 2

   You are replacing Google Workspace or Microsoft 365: Workspace Standard

   Standard is the plan with storage large enough for Drive to be your file store, plus groups, team vaults and longer meetings. Run the five-person subtraction above before you decide it is expensive.

3. 3

   You need retention policies, Scribe or heavy storage: Workspace Premium

   Choose Premium for data retention policies, 3 TB per user, 250-person meetings, Scribe included and unlimited Lumo prompts. If none of those is a requirement, Standard covers you.

4. 4

   You want an AI agent working in the inbox: Proton is not that product

   Proton's AI comes as Lumo, which Proton calls a private AI chat, and Scribe, an email writing assistant in the composer. Neither is sold as an agent that triages your inbox and prepares replies across threads. We build AI Emaily, which does, but it does not connect to Proton accounts today: Bridge serves mail from your own computer and our sync runs on our servers, so it cannot reach it. If you stay on Proton, use Bridge with a desktop client. If inbox AI matters more than zero-access storage, AI Emaily works with Gmail, Outlook and Microsoft 365, iCloud and IMAP providers.