by Proton AG in Email clients
Documented criteria are source-backed values, not estimates. Research records can still have unknown results. Verified does not mean independently tested; extraction confidence and human review are shown with each claim.
| Attribute | Value | State and source |
|---|---|---|
| Custom email domain | Yes | Verified71% confidenceEvidenceNoteCustom domains require a paid Proton Mail plan and DNS configuration. They are not included in Proton Free. Sourcehttps://proton.me/support/custom-domain · Primary documentation · retrieved 2026-10-03 Confidence71% - the source confidence; no cap applies (below the measured precision) HistoryStatement history How it was read Read byeditorial:buying-guides-2026-10-03 MethodReviewed against the official documentation; the note records plan and platform limits. First observed2026-10-03 Last checked2026-10-03 Human reviewnot documented Source confidence71% Reader precision71% - no measurement for this reader; this is the average across all our readers, measured by hand Confidence interpretationA heuristic informed by source assessment and reader samples, not a calibrated probability that this individual claim is correct. |
| Data export | Yes | Verified71% confidence How to export and restore emails using the Proton Mail Export Tool | Proton (Primary documentation), retrieved 2026-10-03 EvidenceNoteThe Export Tool is available to all users on Windows, macOS and Linux. It exports decrypted mail; it does not export Calendar, Drive or Pass data. Sourcehttps://proton.me/support/proton-mail-export-tool · Primary documentation · retrieved 2026-10-03 Confidence71% - the source confidence; no cap applies (below the measured precision) HistoryStatement history How it was read Read byeditorial:buying-guides-2026-10-03 MethodReviewed against the official documentation; the note records plan and platform limits. First observed2026-10-03 Last checked2026-10-03 Human reviewnot documented Source confidence71% Reader precision71% - no measurement for this reader; this is the average across all our readers, measured by hand Confidence interpretationA heuristic informed by source assessment and reader samples, not a calibrated probability that this individual claim is correct. |
| Email client connection | IMAP/SMTP through desktop Bridge | Verified71% confidence Encrypt your desktop email app with Proton Mail Bridge | Proton (Primary documentation), retrieved 2026-10-03 EvidenceNoteA paid Proton Mail plan and the local Bridge app are required. Bridge connects supported desktop email clients; it is not a mobile IMAP service. Sourcehttps://proton.me/mail/bridge · Primary documentation · retrieved 2026-10-03 Confidence71% - the source confidence; no cap applies (below the measured precision) HistoryStatement history How it was read Read byeditorial:buying-guides-2026-10-03 MethodReviewed against the official documentation; the note records plan and platform limits. First observed2026-10-03 Last checked2026-10-03 Human reviewnot documented Source confidence71% Reader precision71% - no measurement for this reader; this is the average across all our readers, measured by hand Confidence interpretationA heuristic informed by source assessment and reader samples, not a calibrated probability that this individual claim is correct. |
| Families named as an audience | Yes | Verified71% confidenceEvidenceExcerpt ...ny technical expertise to start using private email with Proton Mail. Do you offer a plan for families? View details The Proton Family plan lets you protect your family’s online privacy. You c... Excerpt kindrunning text Subject named in excerptyes Sourcehttps://proton.me/mail · Primary documentation · retrieved 2026-09-03 Confidence71% - capped at the average precision across all our readers (71%); this reader has no measurement of its own HistoryStatement history How it was read Read bytext pattern muster:\bfor (?:the whole |your )?famil(?:y|ies)\bFirst observed2026-09-03 Last checked2026-09-03 Human reviewnot documented Source confidence90% Reader precision71% - no measurement for this reader; this is the average across all our readers, measured by hand Excerpt-kind precision85% (measured by hand over 417 statements of this kind) Confidence interpretationA heuristic informed by source assessment and reader samples, not a calibrated probability that this individual claim is correct. |
| Free tier | Yes | Verified71% confidence Create a free email account or choose a paid plan | Proton (Primary documentation), retrieved 2026-10-03 EvidenceNoteProton Free is a continuing free plan for one user. Paid plans add mailbox capacity and custom domains. Sourcehttps://proton.me/mail/pricing · Primary documentation · retrieved 2026-10-03 Confidence71% - the source confidence; no cap applies (below the measured precision) HistoryStatement history How it was read Read byeditorial:buying-guides-2026-10-03 MethodReviewed against the official documentation; the note records plan and platform limits. First observed2026-10-03 Last checked2026-10-03 Human reviewnot documented Source confidence71% Reader precision71% - no measurement for this reader; this is the average across all our readers, measured by hand Confidence interpretationA heuristic informed by source assessment and reader samples, not a calibrated probability that this individual claim is correct. |
These are claims about who the vendor addresses, read off their own pages. They say nothing about how well the product serves that audience.
Every documented value links to the page we read it from, with the source tier and the day we retrieved it, in its row under Specifications. “Evidence” in that row opens the excerpt.
These attributes are open in our research. We looked and found no reliable evidence; 121 addresses were checked and are listed below. That is a statement about our research and never about the product.
| Attribute | State | What we checked |
|---|---|---|
| Public API | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Audit log | Not yet verified | Checked 2 addresses (13 reads), most recently on 2026-09-30: proton.me/mail, proton.me/pricing |
| Data processing agreement offered | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Entry price per month | Not yet verified | Checked 1 address (12 reads), most recently on 2026-09-30: proton.me/pricing |
| EU data residency stated | Not yet verified | Checked 2 addresses (9 reads), most recently on 2026-09-30: proton.me/mail, proton.me/pricing |
| FedRAMP authorisation | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Free trial length | Not yet verified | Checked 1 address (12 reads), most recently on 2026-09-30: proton.me/pricing |
| GDPR compliance stated | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| HIPAA compliance stated | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Education named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Energy or utilities named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Financial services named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Healthcare named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Logistics or supply chain named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Manufacturing named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Public sector named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Retail or e-commerce named as a market | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| ISO/IEC 27001 | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Mobile app (iOS or Android) | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| On-premises or self-hosted option | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| PCI DSS stated | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Public list price | Not yet verified | Checked 1 address (12 reads), most recently on 2026-09-30: proton.me/pricing |
| SCIM user provisioning | Not yet verified | Checked 2 addresses (13 reads), most recently on 2026-09-30: proton.me/mail, proton.me/pricing |
| SOC 2 Type II | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Single sign-on | Not yet verified | Checked 2 addresses (13 reads), most recently on 2026-09-30: proton.me/mail, proton.me/pricing |
| Uptime commitment | Not yet verified | Checked 1 address (12 reads), most recently on 2026-09-30: proton.me/pricing |
| Creators named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Enterprises named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Freelancers named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Gaming named as a use | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Remote or hybrid teams named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Small businesses named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
| Students named as an audience | Not yet verified | Checked 1 address on 2026-09-03: proton.me/mail |
An open attribute describes our research and never the product.
How this entry is matched to public registers, each with the day we last read it. An identifier says which record we mean, not anything about the vendor or the product.
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