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Comparison

Proton Mail vs Tuta Mail

Compare the facts. Check the scope. Choose what fits.

Documented differences
1
Same documented value
3
Need more evidence
19
Proton AG
Proton Mail
48% Research progress
Tutao GmbH
Tuta Mail
22% Research progress
Change products Explore the evidence Share card (SVG) API

At a glance

Differences, not an overall ranking
Documented difference

Email client connection

Proton Mail
IMAP/SMTP through desktop Bridge
Tuta Mail
Provider apps; no IMAP/POP3/SMTP
Compare scope and sources

Explore the evidence

Open a row for sources and plan limits
Which criteria should be shown?

Pricing

Entry price per month (USD)
Not yet verified on either side A gap in our research, never a no.
Free tier
Yes
Proton Mail
Verified71% confidence Proton Free is a continuing free plan for one user. Paid plans add mailbox capacity and custom domains.
Yes
Tuta Mail
Verified71% confidence A continuing Free personal plan is listed separately from the paid Revolutionary and Legend plans.
Same value
Sources for this row
Proton Mail:

Proton Free is a continuing free plan for one user. Paid plans add mailbox capacity and custom domains.

Create a free email account or choose a paid plan | Proton (Primary documentation), retrieved 2026-10-03
Tuta Mail:

A continuing Free personal plan is listed separately from the paid Revolutionary and Legend plans.

Create a free email account today | Tuta (Primary documentation), retrieved 2026-10-03
Free trial length (days)
Not yet verified on either side A gap in our research, never a no.
Public list price
Not yet verified on either side A gap in our research, never a no.

Security and compliance

Audit log
Not yet verified on either side A gap in our research, never a no.
Data processing agreement offered
Not yet verified on either side A gap in our research, never a no.
EU data residency stated
Not yet verified on either side A gap in our research, never a no.
FedRAMP authorisation
Not yet verified on either side A gap in our research, never a no.
GDPR compliance stated
Not yet verified on either side A gap in our research, never a no.
HIPAA compliance stated
Not yet verified on either side A gap in our research, never a no.
ISO/IEC 27001
Not yet verified on either side A gap in our research, never a no.
PCI DSS stated
Not yet verified on either side A gap in our research, never a no.
SOC 2 Type II
Not yet verified on either side A gap in our research, never a no.

Platform and integration

Public API
Not yet verified on either side A gap in our research, never a no.
Custom email domain
Yes
Proton Mail
Verified71% confidence Custom domains require a paid Proton Mail plan and DNS configuration. They are not included in Proton Free.
Yes
Tuta Mail
Verified71% confidence Custom domains are available on paid subscriptions. Check the domain count for the selected plan.
Same value
Sources for this row
Proton Mail:

Custom domains require a paid Proton Mail plan and DNS configuration. They are not included in Proton Free.

How to use a custom domain with Proton Mail | Proton (Primary documentation), retrieved 2026-10-03
Tuta Mail:

Custom domains are available on paid subscriptions. Check the domain count for the selected plan.

Tuta Support | How to use Tuta | Tuta (Primary documentation), retrieved 2026-10-03
Data export
Yes
Proton Mail
Verified71% confidence The 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.
Yes
Tuta Mail
Verified71% confidence Mailbox export is available in the Tuta desktop client. Choose the mailbox and destination folder in Email Export settings.
Same value
Sources for this row
Proton Mail:

The 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.

How to export and restore emails using the Proton Mail Export Tool | Proton (Primary documentation), retrieved 2026-10-03
Tuta Mail:

Mailbox export is available in the Tuta desktop client. Choose the mailbox and destination folder in Email Export settings.

Tuta Support | How to use Tuta | Tuta (Primary documentation), retrieved 2026-10-03
Free mailbox storage, up to (GB)
Not researched
Proton Mail
Not yet verified
1 GB
Tuta Mail
Verified71% confidence The Free personal plan lists 1 GB of storage. Paid plans have different allowances.
Needs more evidence
Sources for this row
Tuta Mail:

The Free personal plan lists 1 GB of storage. Paid plans have different allowances.

Create a free email account today | Tuta (Primary documentation), retrieved 2026-10-03
Email client connection
IMAP/SMTP through desktop Bridge
Proton Mail
Verified71% confidence A paid Proton Mail plan and the local Bridge app are required. Bridge connects supported desktop email clients; it is not a mobile IMAP service.
Provider apps; no IMAP/POP3/SMTP
Tuta Mail
Verified71% confidence Tuta documents its own desktop, web and mobile apps rather than standard mail protocols. The mentioned Thunderbird add-ons do not add IMAP support.
Different values
Sources for this row
Proton Mail:

A paid Proton Mail plan and the local Bridge app are required. Bridge connects supported desktop email clients; it is not a mobile IMAP service.

Encrypt your desktop email app with Proton Mail Bridge | Proton (Primary documentation), retrieved 2026-10-03
Tuta Mail:

Tuta documents its own desktop, web and mobile apps rather than standard mail protocols. The mentioned Thunderbird add-ons do not add IMAP support.

Tuta Support | How to use Tuta | Tuta (Primary documentation), retrieved 2026-10-03
Mobile app (iOS or Android)
Not yet verified
Proton Mail
Not yet verified
Yes
Tuta Mail
Verified71% confidence Tuta documents its own apps for Android and iOS, alongside its web and desktop clients.
Needs more evidence
Sources for this row
Tuta Mail:

Tuta documents its own apps for Android and iOS, alongside its web and desktop clients.

Tuta Support | How to use Tuta | Tuta (Primary documentation), retrieved 2026-10-03
On-premises or self-hosted option
Not yet verified on either side A gap in our research, never a no.
SCIM user provisioning
Not yet verified on either side A gap in our research, never a no.
Single sign-on
Not yet verified on either side A gap in our research, never a no.
Uptime commitment (%)
Not yet verified on either side A gap in our research, never a no.
A missing measurement never counts against a product. If we could not reach a document, that is a fact about our research and not about the vendor. Open a row to see the source, its tier and the day we read it.