Still would be great after 4 years.

I just paid very good money for an annual subscription for both me and my partner, only to find out I can't sync my calendar between my email client on my computers and my Proton account. This is a very large functionality gap I would like addressed.

A critical feature, which in my case is the only real roadblock to be able to fully migrate all my calendars to Proton.

I migrated all my emails to Proton about a month ago, assuming that the calendar and Contacts would be synchronized with Outlook, like the emails. What a mistake! I am very disappointed. This is critical; I constantly have to switch from one application to another. I am seriously considering going back to Outlook.

It would be nice to have this reflected on the roadmap, since it is unlikely to be deemed unnecessary.

Proton Mail Bridge can be turned into Proton Bridge and include the following features to provide complete local accessibility.
- Mail via IMAP & SMTP
- Contacts via CardDAV
- Calendar via CalDAV
- Drive via WebDAV

Mail is already part of the bridge, and it would continue to be the core functionality of the bridge. Other features should be toggles.

Drive can be too large to sync for some devices, and may not be desirable. It can be implemented as a storage for uploading files larger than 25 MB and won't fit as an attachments. Uploading to drive would automatically generate a share link which can be pasted into the email.

Thunderbird does support WebDAV storages such as NextCloud via an extension, https://addons.thunderbird.net/en-CA/thunderbird/addon/filelink-provider-for-owncloud/ .

Using the web app for business adds work and the possibility of errors when moving between the mail and calendar. The Bridge works well for mail please expand it to handle Calendar as well

unbelievable that this hasn't been done. And looking at the excuse you peddle for communicating your roadmap, I'm more than likely just going back to gmail for everything.

This is a must for me. Right now I’m running back and forth between Google and Proton. I use iCal to keep them organized but with Google I can input directly into iCal.

CalDav Support!, critical!

I’d REALLY like to have an automatic synchronisation between my Proton Calendar, and my Apple iCal.

It’s so tedious (and a huge time consumer) doing each update twice.

Could this be done via the Google Calendar? It’s something I don’t want to do, but if it can work as an interim work-around…

This would be really important to me!

Definitely critical for business use!

I have subscribed to Mail Plus, thinking that the Proton Bridge would handle contacts and calendar events as well, but it seems I was wrong. This is an absolute must for me, since I rely on Thunderbird due to my employer banning email forwarding to other addresses.

I really hope to see this discussed soon, as it is quite cumbersome to keep manually importing my Thunderbird events and contacts every month to Proton.

I really need this feature to be implemented. It's really frustrating how Proton has adopted the Linux mantra of "almost there", but consistently behind. I need to be able to use my Proton account with native apps because their Electron counterparts just don't suffice for my needs.

This is the most frustrating thing with proton. Please allow Contacts AND Calendar syncing with our prefered apps through a Bridge.

Pour ma part, j'aimerais une compatibilité avec Evolution (Linux) pour les Agendas, Contacts, Mails et Notes.

Sur mon ordinateur de bureau, je ne veux pas avoir à utiliser des applications différentes pour mes différents comptes

I want to use Proton Calendar (as well as contacts) but being forced to use the official apps and not being able to sync them with Thunderbird makes it a complete non-starter. Sticking with iCloud for calendar and contacts until Proton fixes this.

Needs to work with Fedora 40+ BetterBird.

Absolutely important if I want to use my native calendar app that integrates with my devices OS.