Proton AG
Proton Mail
End-to-end encrypted email from Switzerland-based Proton, with a free plan.
Where it fits
- device
- MacWindowsiPhoneAndroid
- must-haves
- AI replies and summaries
- price
- FreeUp to $10 a monthUp to $20 a month
Pricing
- Free plan
- Yes
- Paid from
- $3.99/month per user billed yearly
- Billed monthly
- $4.99/month per user
From Proton AG's pricing page, checked October 26, 2026. Prices change; the vendor's page has today's.
Features
- Works on
- Mac, Windows, Linux, iPhone, Android, Web
- AI features
- Yes
Proton Mail alternatives
ReaddleSpark MailEmail client by Readdle with a smart inbox, AI assistant and shared team inboxes.Free plan · paid from $8.25/user/mo
MicrosoftMicrosoft OutlookMicrosoft's email and calendar app; free with ads, ad-free with a Microsoft 365 plan.Free plan · paid from $1.67/user/mo
SuperhumanSuperhuman MailKeyboard-driven email app with AI drafting and team sharing for Gmail and Outlook.From $25/user/mo
CartasecCanary MailEmail app with an AI Copilot, read receipts, PGP encryption and shared inboxes.Free plan · paid from $3/user/mo
AppleMailBuilt into macOS, iOS and iPadOS: Apple's mail app, with Apple Intelligence summaries.Free
MZLA Technologies (Mozilla)ThunderbirdFree, open-source desktop email client funded by donations, now also on Android.Free
GoogleGmailGoogle's email service on web and mobile, with Gemini drafting and thread summaries.Free plan · paid from $7/user/mo
MimestreamMimestreamNative macOS email client for Gmail, built on the Gmail API.From $4.17/user/mo
Questions
How much does Proton Mail cost?
Proton Mail's cheapest paid plan is $3.99 a month per user when billed yearly, or $4.99 billed monthly, and there is a free plan, according to Proton AG's pricing page on October 26, 2026.
Is there a free version of Proton Mail?
Yes, Proton Mail has a free plan.
What does Proton Mail work on?
Proton Mail works on Mac, Windows, Linux, iPhone, Android and Web.
What are the best Proton Mail alternatives?
The email apps reviewers recommend most besides Proton Mail are Spark Mail, Microsoft Outlook and Superhuman Mail. Each is compared below.
We don't test apps ourselves. Features and prices come from Proton AG's own site, and alternatives are ordered by what independent reviewers recommend.