API access to the calendar (also for the whole platform) is going to be more and more important in the next years as not only businesses but also more and more private consumers will start automating there daily processes using low-code platforms like n8n or agentic ai.

From my point of view not having an api will be a big deal breaker for customers in the future. Honestly I do not understand why there is still no till today. For now I am using proton but if this will not change in the near future I will look for alternatives.

At least some sort of ICS File Auto-Import would be nice.

ICS Files can be generated with API's, Scripts and so on.

A cloud service that can interact with n8n in 2026, is basically good as dead. Proton needs to put automation at the forefront of its development.

Well, I enthusiastically moved from Microsoft 365 to Proton for my work accounts. However, the lack of integration has proven to be a new point of friction. Now, I'm looking to write my own code to solve problems, but there is no API. It is apparent that API integration is already done in some fashion, or Proton wouldn't be offering Zoom integration.

Proton, why am I as a user a second class citizen compared to Zoom?
Since I see this request is several years old, I assume you're making a financial choice to not offer something that is apparently already coded.

I nees this api so bad, why is it not prioritized more...

This would be sooo useful! Please please please add at least a basic public API. I love soooo much about proton, but this is a definite sad missing feature.

I really need this for n8n automation. Otherwise, I will have to switch to a different provider (like Gmail... yuck!)

Need an API to create a daily digest to send to Proton mail.

Hi Heather, you can achieve this with ChatGPT. Use the prompt:

Create separate .ics files for the following events, each file should be download link:

Name, Date, Start, Duration

My event, 1.8.2025 12:00, 1 hour

etc.. y

I would love to be able to load events to Proton from an email or website!

I want to switch a web calendar to Proton, but it lacks API, so i can't do it. This is critical for transition to Proton. If something like API it's not available, Proton is not a good choice.

I am DESPERATE for an API that supports getting calendar info, even if just for availability into an Outlook or Gmail Calendar.

I do consulting work, and I work with different clients, some in the Corporate Enterprise environment. For scheduling across clients, I need a single calendar with my availability, that works with Calendly, and that I can use an automation platform to send new/modified/deleted events to a calendar in a Corporate Account (because I need the free/busy time to show up in the Outlook scheduler).

When I correspond with my Proton email, the other party will send calendar invites to that email, which goes into the Proton calendar. I end up getting double-booked or missing meetings with clients because of the inability to sync calendar availability. The best use of my time is NOT doing manual syncs across calendars, so I need to pay an assistant to keep this information up-to-date.

I haven't figured out a way to integrate with scheduling software that's ubiquitous in the business world, because of the lack of an API/integrations in Proton. But this is where I want all my events. This feature means a lot to me.

Please. Syncing multiple calendars with the manual import function is extremely painful. If there could be an API (maybe via the desktop bridge), I could automate it.

I would like to use a n8n AI agent to interact with my Proton Calendar

Some kind of read API for uses like integration with GNOME would be amazing. The only reason why I'm considering canceling my premium subscription is the inability to connect Proton to my integrated calendar.

Automating calendar tasks is a key part of overall automation

That would be amazingly useful ! It would allow me to never use again the ugly calendar that the university where Im at use.

would really like to see this, particularly so GNOME can integrate Proton into their online account manager: https://gitlab.gnome.org/GNOME/gnome-online-accounts/-/issues/205

Even just a read API for now - automating things like billing from calendar appointments is crucial and this needs an API to query e.g. the previous month events.