Proton Calendar Free plan

Proton Calendar is an end-to-end encrypted calendar from Proton. Its Free plan includes 3 personal calendars and 1 GB of storage.

ProtonUpdated monthly · checked 3 h ago

Proton Calendar Free plan is a productivity and SaaS perk from Proton, offering a free plan (3 calendars, 1 GB), with no funding required.

Value: Free plan
Who qualifies: No funding needed
Benefit type: Free plan
Terms: Verified

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While you apply

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What you get

Inside Proton Calendar Free plan

The Free plan allows up to 3 personal calendars and up to 1 GB of storage, with calendar sharing and invitations included.
Mail Plus costs $3.99 per month and allows 25 personal calendars.

Source: The provider's official program page

Eligibility

Who it's for

Free plan Any startup

Funding / backing: No funding needed
Geography: Global
Recurring / expiry: Free plan with no time limit stated.
Other requirements: Proton Calendar encrypts event titles, descriptions, locations and invitees end to end, according to its calendar page.

How to claim

How to apply for Proton Calendar Free plan

Steps to apply

1Create a free account on proton.me.
2No application is needed.

Good to know: Plans read on proton.me/pricing on October 29, 2026.

Apply at Proton

Source: The provider's official program page

Value is the headline maximum Proton advertises. What your company actually receives depends on your eligibility and how you use the program, and terms can change. A comparison, not endorsed by the programs listed. A link labeled as a referral link may earn us a commission, and a program labeled Same owner comes from the company that runs StartupPerks. Confirm current terms on the provider's page.

Questions

Proton Calendar Free plan: common questions

Is Proton free?

Yes, Proton can be used for free. Free plan (3 calendars, 1 GB). As stated on Proton's own page, linked on this page.

Who qualifies for Proton Calendar Free plan?

Proton Calendar Free plan is open to any startup, with no funding required. Proton Calendar encrypts event titles, descriptions, locations and invitees end to end, according to its calendar page.

Do I need to be VC-backed or in an accelerator to get Proton Calendar Free plan?

No. Proton Calendar Free plan is open to any startup that meets the stated criteria, no investor or accelerator backing required.

How do I apply for Proton Calendar Free plan?

Create a free account on proton.me. No application is needed.

How long do I have to use Proton Calendar Free plan, and does it expire?

Free plan with no time limit stated.

Is Proton Calendar Free plan available outside the US?

Proton Calendar Free plan is available globally, subject to the provider's terms.

Free AI calendar assistants, comparedProton Calendar's free plan next to every other free AI calendar assistantWhat each AI calendar assistant gives you free today, its main limit and what the first paid plan costs, read from each provider's own page.