I just signed up to paid service and trying to move away from Outlook but found contacts is basically useless on PM.
Outlook I can edit and sync on desktop, web or Android contacts app and sync instantly with no work needed.
Until PM sorts this out I can't ditch Outlook just for the contacts.

This has been a request since 2017?! Having a seamless cloud backup sync for contacts is a basic feature since the invention of smartphones. What is Proton doing not having such a basic feature?

Hi,
is there any news here?
This would be a very important feature to securely store my contacts and delete my Google account. I don't want to put a third party provider in between. Thank you.

Any updates on this? Not being able to sync contacts prevents me from both moving to ProtonMail and recommending it. Relying on a 3rd party for sync or having 2 contact list isn't really a solution.

Ideally Proton would achieve this by integrating an EteSync server. EteSync provide a ready to use, open source, and well established solution for adding end-to-end encryption: Etebase (https://www.etebase.com/).

It already works with Android, iOS, Windows, Linux, macOS, Thunderbird, Evolution, Kontact, Tasks.org, and any other CalDAV/CardDAV client.

I've been using it for a number of years already, and it's never failed, not once. It's the only sync solution I've ever used that's not had problems with duplicates or missing data.

Being able to use this with ProtonMail would be perfect.

Rather than reinventing the wheel by developing their own implmentation, which would take a long time to develop and test, Proton should implement an already existing solution that's specifically designed to achieve EE2E synchronization of PIM data.

By opting for Etebase they'd achieving not only the contacts synchronization people are begging for, but also that of calendar entries and tasks with one single solution.

I have a Visionary account, but if there's one thing that tempts me to ditch it and go back to Google, it's the fact that I can't access a single list of contacts from both ProtonMail and iMessage. After two years, I have two messy contact lists.

same thing is also here https://protonmail.uservoice.com/forums/284483-protonmail/suggestions/14826717-allow-android-contacts-app-access-to-proton-contac

It would be great to be able to sync ProtonMail contacts and iOS/Android native contacts in the phone/tablet app.

MUST have my Apple Contacts app available on my iphone. Need to sync automatically with my protonmail contacts. Can't get completely away from gmail because my iphone contacts go away when I remove gmail from my apple id.

Regarding privacy, a dedicated contacts app on Mobile and Desktop which provides the option (non-mandatory) to synchronize into system contacts would be ideal. It would allow those who value convenience and those who value absolute privacy to both be satisfied.

If you have no plan to get Contacts Issues solved quickly we will assume it is dead and move our company business off Exchange to something else.

Contacts stops me from moving my businesses to ProtonMail

As an equally secure (perhaps more secure?) solution, try this:
1. Host your contacts on your NAS (I use Synology's Contacts app)
2. Use a WebDAV app to sync to your mobile (I use Contact Sync on Android - paid), and
3. Use open source CalDavSynchronize to sync to your desktop Outlook client (if you use it)

The UX is not perfect if you prefer ProtonMail's webmail or app on Android... but...
I wholeheartedly agree with the many other posters who have highlighted the pace of new feature delivery at ProtonMail is incredibly slow...

The solution described above will provide a secure, reliable, and private solution TODAY.

This is the one thing stopping a full migration to ProtonMail for me. Need my contacts synced between desktop and mobile.

Integrating/syncing Proton contacts with existing Google contacts app would likely not provide any additional privacy than just using the Google app itself. Would prove more beneficial for standalone open-source Proton Contacts app that integrates with a privacy oriented phone calling app for those not using Google service, or looking to leave it behind. Same for iOS.

This goes all way back to 2015. It has been almost 7 years since ProtonTeam first commented on it.
4 years after in 2019 it was flagged as planned.
Now almost 3 years later, it still hasn't been implemented.
It's the 5th highest voted feature.
Come on ProtonTeam. Contacts is an important thing, not just as an in-mail widget.

This feature is a game changer. Please add it asap.

[From a paid user who just switched and is now thinking of going elsewhere...] The status of this says "Planned" as of Jan 10 2019. That is almost three years ago!! This is a critical requirement for this app to be viable. Requiring the user to maintain two contact lists is just not realistic and is driving against acceptance of Proton.

And also change notifications to not use google services

If you added a mobile Contact app, or at least the ability to sync-back-and-forth from ProtonMail, your user base would increase dramatically. Coming from a paid (Plus) user, considering (Professional), I can't pull the trigger yet. My wife would hate the contact non-mgmt.

Currently, all your users are the die-hard "privacy or death" users who can survive the inconvenience of contact non-mgmt. If you added a contact app, you would get the multitudes of "privacy preferred" users.

There's tons more of those privacy-preferred peeps out there who can't live without a contact app.