Shocked that this is not part of the product, from day one!
Awaiting shared mailboxes. Switching to Proton the day they are introduced.

I wanted to switch to Duo but if I can't have shared email addresses I won't. My partner and I are sharing a single premium account and the Duo subscription would be making it harder.
Until this is updated, I won't update my subscription plan. That's a pitty.

Answering a question below for why I did not vote on this feature – I can create an alias and setup forwarding for everything arriving at that alias to my partner's account. It doesn't work like a shared folder, e.g. where an email I delete happens to both accounts, but it does allow mails arriving on that alias to be sent to both accounts. This is good enough for my scenarios already.

Was just about to sign up for a Family account and bring the family over to Proton, but the lack of a shared inbox for myself and my wife is a showstopper. Typically, all emails relating to the kids get sent to a shared gmail account, I was hoping it could be easily done with Proton but it seems like it doesn't.

Exactly that business case. I made a "family" mailbox I would like to share with my wife.

It's 2025, how is this not a feature for a pricing tier aimed at dual person households. It would be an amazing feature for the family plan too. I would instantly upgrade to duo or family plan if this was an option.

It blows my mind that this feature request is so low in terms of votes. I guess most people are using single user licences.
Regardless, this is a game changer for everyone on Duo, Family or Business.
We don't want this, we NEED this.

Lack of this feature is the main reason I’m not paying for the duo plan.

This is critical! I have just signed up for a Duo account, and I am reconsidering it just for this feature! Couples need to be able to share and manage one same email address from both accounts!

So when checking this again, I find out Proton actually has the feature, but reserves it exclusively for Business accounts: https://proton.me/support/groups

So for twice the price you can finally get a feature that is essential for every +1 person household. Odd strategy.

*@custom.domain -> shared inbox

*@person1.custom.domain -> person1 inbox

*@person2.custom.domain -> person2 inbox

Would be great

A delegated inbox feature would be a game-changer. I am trying to move a nonprofit to Proton from Google but I think the lack of a delegated inbox will be a deal breaker. This is also an issue for our personal family plan.

Also needed for family and business.

For anyone looking for an alternative solution: Using SimpleLogin you can create an alias that gets delivered to two mailboxes (e.g., you and your partner). If either of you replies to the simplelogin reverse alias then it will be forwarded via the original alias, so both of you have the ability to both receive and send from the same address. IIRC it even sends a copy to the other mailbox!

I'd consider using Duo if this was an option.

The accounts that currently use my free joint protonmail include our joint bank account, our household internet subscription, some arts & entertainment lists, water company, property tax reminders, etc. However, I'm the only one paying attention to it so it really isn't "joint" at all. I think a proper Duo account would make it possible for us to each login to our individual email and, with an easy switch accounts action, the joint one, too.

This is absolutely critical to maintain Proton Duo as a feasible product offering for a tech/security focused household.

Each partner has their own independent custom domain and would like to use a third shared custom domain to manage the household with ease. In cases of urgency or emergency, one partner should be able to send emails from the same address in a unified inbox/folder system without having to login to their partner's user account.

I paid for a duo plan thinking I could create a shared email address that both my wife and I could use.Very dissapointed that this is not the case., Are you considering this option?

Come on Proton, get with the program. People have been asking for this for ages, and now that so many of us are dying to move away from US services like Google this is the one missing link.

Our household effectively runs on a share email address (currently via Google Groups). We can't do without it.

Shared inbox and email-folders should be possible for family accounts, just like it is possible at Tuta email! I am considering to upgrade to duo, but I was very supprised that shared emil-folders not is possible!