Proton Mail
Encrypted email on a customer's own domain, from a Swiss company that sells privacy as the product.
proton.me/business/mailpricingdocs
Mail where the company cannot read it.
Proton Mail sells business mailboxes on a customer’s own domain, from Proton AG in Geneva, with end-to-end encryption as the thing being sold rather than a feature of it. Business plans run from mail and calendar alone up to bundles carrying storage, documents, a VPN and a password manager, each tier allowing more custom domains than the last.
Worth knowing
No price is recorded here, and not because none is published: the business pricing page renders its figures only after a region is chosen, so nothing could be read off it directly. The plan names and the domain allowances are on the page; the numbers are not.
Mail is the whole product. Nothing of a customer’s runs, which is why the runtime, deployment and shell rows read as not applicable, and the site this serves lives on a host elsewhere.
Sources
- 2026-09-09: Wikidata
www.wikidata.org/wiki/Q17355735 - 2026-09-07: Reach
majestic.com/reports/majestic-million - 2026-08-12: Categories, Headquarters, Free tier
proton.me/business/mail/pricing - 2026-08-21: Ownership
proton.me/blog/proton-non-profit-foundation
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