Quick Answer
Last verified:
High confidence

Proton costs Free to $29.99 per month as of September 2026, with 7 plans available including a free tier. Plans: Free (free), Mail Plus (Yearly) at $3.99/month, Mail Plus (Monthly) at $4.99/month, Unlimited (Monthly) at $12.99/month, Unlimited (1-Year) at $9.99/month, Duo at $14.99/month, and Family at $29.99/month. Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: Yes

Proton offers 7 pricing tiers: Free, Mail Plus (Yearly), Mail Plus (Monthly), Unlimited (Monthly), Unlimited (1-Year), Duo, Family. A free plan is available. Paid plans include Mail Plus (Yearly) at $3.99/user/month, Mail Plus (Monthly) at $4.99/user/month, Unlimited (Monthly) at $12.99/user/month. The Mail Plus (Yearly) plan is users who want advanced encrypted email features without the full proton suite.

Last verified: | Sources: 5 pricing pages and reviews
Know Before You Buy — Try Proton Free

Proton lists $0-$29.99/month, but hidden costs like implementation and support add to the total as of September 2026. Key hidden costs: limited free tier storage, platform feature parity gaps, ecosystem lock-in. Verified from 5 sources by CostBench.

Hidden Costs Breakdown

1

Limited Free Tier Storage

medium limitation

The free plan includes only 1 GB of email storage, which fills up quickly with modern email usage. Users are effectively forced to upgrade or constantly delete emails to stay under the limit.

g2

The free plan restrictions severely limit practical usability, with the 500MB storage allocation filling quickly with modern email usage patterns.

2

Platform Feature Parity Gaps

low limitation

Proton's mobile apps lack features available on desktop and web. Proton Drive has no search on mobile, and Proton Mail's conversation view is unavailable on Android. This can reduce productivity for users who rely on mobile access.

review

Mobile apps, desktop apps, and web apps are not available consistently on all platforms, and there is a lack of feature parity between platforms.

3

Ecosystem Lock-in

medium migration

Switching to Proton means migrating email, contacts, calendar, files, and passwords into Proton's ecosystem. Migrating away later requires exporting each service separately. The proprietary encryption means standard IMAP clients need the Proton Bridge app (desktop only), adding complexity.

review

Premium plans can feel pricey, and some tools still lack the depth of features you'd find in Google Workspace or Microsoft 365.

4

Storage Overage Blocks Email

high overage

When Proton storage reaches capacity, users are completely unable to send or receive emails until space is cleared or plan is upgraded. This can result in missed communications and potential business disruption.

reddit

If your Proton storage is full, you will be unable to send or receive emails

5

Grandfathered Pricing Loss on Plan Changes

medium addon

Users lose their grandfathered pricing if they make any changes to their subscription including changing payment method, billing frequency, or switching between subscription types. This can result in significant price increases.

reddit

grandfathered pricing from a previous subscription isn't retained if you switch to a new plan and billing cycle

reddit

Any adjustments made to an existing subscription - like changing payment method, changing billing frequency, moving from App Store subscription to Dropout.tv subscription - will result in losing legacy pricing

6

Limited Plan Customization

medium addon

Proton does not allow users to purchase additional storage, custom domains, or aliases separately. Users must upgrade to higher-tier plans to access these features, even if they only need one specific upgrade.

reddit

Lack of plan customization, such as buying additional storage, or more custom domain or aliases

7

Inconsistent Regional Pricing

medium compliance

Proton charges the same absolute price across different currencies without adjusting for local purchasing power, making it significantly more expensive in countries with lower wages compared to regional pricing offered by competitors.

reddit

proton isn't Steam, it doesn't have localized pricing

reddit

The pricing in PHP is also cheaper compared to the USD prices on the site. So there is regional pricing

8

Forced Upgrade to Unlimited When Combining Services

medium addon

Users who want multiple Proton services — such as VPN plus the password manager — report being told they cannot purchase these as standalone add-ons and must instead upgrade to the Unlimited plan at $9.99/month annually. This can mean a jump from the Mail Plus yearly rate of $3.99/month to $9.99/month just to access a second service, adding $72/year or more in unplanned cost.

trustpilot

It took 3 days to establish that I won't allow me to purchase the standard VPN, I would need to "upgrade" to Unlimited.

9

Email-Only Support with Multi-Day Response Times

high support

Proton has no live chat or phone support. All support is handled via email tickets with documented response times of 36–72+ hours, and sometimes over a week for escalations. This creates significant operational risk for users who rely on email for business, financial accounts, or two-factor authentication. Free users report even slower or no responses.

trustpilot

There is NO EFFECTIVE CUSTOMER SERVICE / SUPPORT. There is NO WAY TO CONTACT PROTON HELP OTHER THAN EMAIL. You send an email and they reply to that email. That is the model and that model takes DAYS (not hours or minutes....DAYS) to resolve an issue.

trustpilot

I submitted a query about opening my account and after 36 hours am still waiting for a response. This is not acceptable.

10

Auto-Renewal Charges and Difficult Refund Process

high overage

Proton automatically renews subscriptions annually. Multiple users report difficulty obtaining refunds within the stated 30-day window because the email-only support channel is slow to respond. Some users report approaching or exceeding the refund window before receiving any reply. At least one user reported being charged before the renewal date, and another was offered retention discounts in lieu of a refund.

trustpilot

I have not received a reply regarding a refund, despite me being within the 30-day refund window. At this point, I suspect that Proton is purposely ignoring my emails, as I'm close to the 30-day window (about 8 days left).

trustpilot

Now, I receive TWO attempted charges on my business card (rideshare) for a heavily inflated amount from 2025. The fact that a user cannot leave via the app is ponderous.

11

Higher Renewal Pricing for Existing Customers vs. New Introductory Rates

medium addon

Long-term Proton customers report that introductory pricing is significantly lower than renewal rates, with at least one user reporting renewal charges close to double the original price paid. Customer support reportedly responds with generic policy references and does not offer loyalty discounts or rate matching for returning customers.

trustpilot

Proton now appears to focus on attracting new customers with heavily discounted introductory offers, only to charge existing customers almost double when it comes time to renew. It's disappointing because loyalty seems to count for very little.

12

Storage Shared Across All Proton Apps on Paid Plans

medium overage

Paid plan storage is pooled across Mail, Drive, Calendar, and other Proton apps — there are no per-service allocations. Users report that 15GB of combined storage across all apps on a paid plan feels limiting compared to competitors offering more storage for free on competing services.

trustpilot

the 15gb of combined storage across all apps on a paid plan is measly, I get 30 gb for free with Mega.

13

Account Suspension Risk from False Positive Anti-Spam Detection

high compliance

Proton's automated anti-spam systems can suspend accounts without warning based on false positives. Users report that legitimate accounts have been suspended — in one case, the username alone triggered the filter. Reinstatement may require submitting business documentation or a professional domain, causing days or weeks of lost email access. This is especially damaging for accounts tied to 2FA or financial services with no alternate contact method.

trustpilot

My account was automatically suspended after only a few manually written private emails. Proton later admitted that apparently even the username itself triggered their anti-spam system. Despite explaining the legitimate purpose in detail, Proton now demands additional business documentation or an official business domain before correcting their own false positive.

trustpilot

Be aware, there is a lock-in to an email service if you use it for financial account and/or 2FA account authentication.

Frequently Asked Questions

01 What hidden costs should I budget for with Proton?

Beyond the license fee, budget for: Limited Free Tier Storage (Upgrade to paid plan ($9.99-$12.99/month) once storage fills); Platform Feature Parity Gaps (No direct cost, but reduced productivity on mobile); Ecosystem Lock-in (Hours of migration effort; Proton Bridge required for third-party email clients); Storage Overage Blocks Email ($4-$10/month); Grandfathered Pricing Loss on Plan Changes (10-30% price increase); Limited Plan Customization ($4-$6/month); Inconsistent Regional Pricing (15-50% higher relative cost); Forced Upgrade to Unlimited When Combining Services ($72-$96); Email-Only Support with Multi-Day Response Times (5-15% of license costs); Auto-Renewal Charges and Difficult Refund Process ($47-$360); Higher Renewal Pricing for Existing Customers vs. New Introductory Rates (50-100% of license costs); Storage Shared Across All Proton Apps on Paid Plans (5-10% of license costs); Account Suspension Risk from False Positive Anti-Spam Detection (5-15% of license costs). Exact totals depend on your deployment size and negotiated terms.

02 Does Proton charge for implementation?

Implementation costs for Proton vary by deployment size and customization. Contact the vendor or check our sourced hidden-cost breakdown above for verified figures.

03 How much does Proton support cost?

Proton has no live chat or phone support. All support is handled via email tickets with documented response times of 36–72+ hours, and sometimes over a week for escalations. Estimated impact: 5-15% of license costs.

04 Are there overage or storage costs with Proton?

When Proton storage reaches capacity, users are completely unable to send or receive emails until space is cleared or plan is upgraded. This can result in missed communications and potential business disruption. Estimated impact: $4-$10/month.

05 What add-ons cost extra with Proton?

Add-on pricing for Proton varies by feature. The sourced cost breakdown above lists any verified add-on costs we have.

Now You Know the Real Cost — Try Proton Free

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