Proton Mail vs Tuta Comparison

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Feature	Proton Mail Visit →	Tuta Visit →
Overview
Rating	8.5	7.9
Pricing	$4.99/moMail Plus (individual, annual) $12.99/moProton Unlimited (individual, annual) Show billing detailsHide billing details Mail Plus (individual, annual): $59.88/year at renewal ($47.88 first year with the introductory rate) Proton Unlimited (individual, annual): $155.88/year at renewal ($119.88 first year with the introductory rate)	$3.00/moRevolutionary (individual, annual) $8.00/moLegend (individual, annual) Show billing detailsHide billing details Revolutionary (individual, annual): Billed yearly, taxes included; €4.32/month if billed monthly Legend (individual, annual): Billed yearly, taxes included; €9.60/month if billed monthly
Free tier	Limited free tier Show detailsHide details 1 GB storage, 1 email address, 150 messages/day, 10 hide-my-email aliases, no custom domain	Limited free tier Show detailsHide details 1 GB storage, 1 calendar, 3 labels, no custom domain, no extra addresses
Established	2014	2011
Platforms	WindowsmacOSLinuxAndroidiOS	WindowsmacOSLinuxAndroidiOS
Privacy
Jurisdiction	Switzerland Show detailsHide details Proton AG, Route de la Galaise 32, 1228 Plan-les-Ouates, Geneva. Since June 2024 the primary shareholder is the non-profit Proton Foundation, also based in Geneva. Proton Europe sàrl (Luxembourg) is the designated EU GDPR representative.	Germany Show detailsHide details Tutao GmbH, Deisterstr. 17a, 30449 Hanover, Germany. Registered at the District Court of Hanover, HRB 208014.
Independent security audit	Securitum 2021 Show audit detailsHide audit details Source-code security audit of the redesigned Proton Mail web client and Proton Calendar, prior to release	None on record
Source code	Fully open source	Fully open source
Zero-access encryption	Yes	Yes
Intra-provider E2EE	Yes	Yes
External PGP	Manual import	Not supported
Past data breach	No	No
Telemetry	On unless you opt out	No telemetry
Features
Hosting	Cloud	Cloud
Custom domain support	Yes	Yes
Aliases	Unlimited	Limited
Anti-spam approach	PhishGuard flags spoofing and phishing using sender authentication (SPF/DKIM/DMARC) and metadata such as headers, link URLs and attachment hashes, not message content, since encryption prevents Proton from reading it; a machine-learning model retrains on user feedback (marking spam/phishing or rescuing a message from spam).	SPF, DKIM, DMARC and MTA-STS harden the infrastructure against phishing and spam at the protocol level; Tuta blocks external content (images, videos) in emails by default and warns when the technical sender differs from the visible From address, without scanning encrypted message content.
Bundled services	CalendarDriveVPNPass	CalendarDrive