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!

My wife and I have shared an additional Gmail account together for years, used for anything we'd both need to manage for our home. We're now both migrating to Proton and this would effectively allow us to move the rest of our joint emailing over to this service as well.

My wife and I also need this feature - with the ability to both receive and "send as" the joint address.

Lack of this feature is the last thing tying us to Google's email service.

We paid for the duo plan specifically because we thought we would be able to create joint emails under our domain name. I am baffled that this is not a feature.

This is critically important. Creating a free account for joint mail is not a solution because forwarding is not possible for free accounts. The only real solution is to use a free Gmail account which does support forwarding -- but this solution is absurd, as it nullifies all of the privacy of the paid Proton account.

As another commenter said, I was happy with a simpler solution before:

- 2 emails, one for me and one for my partners
- 1 "shared" email, which we can use to send the reply to the two personal emails.

It's not perfect, but a "send as" and a forward did the trick for ages on Gmail, and now I use a third party service for forwarding, but I'm constantly fighting with the MX records.

Part of the reason for signing up to duo was to enable us to transfer over to a new joint email on this platform.

We have joint accounts for money, we need a shared account for email to go with.

I would totallylove a feature like that where both parteners can have acces to the same email address. Like:
- I have my original mailbox
- my partener has their original mailbox
- and we have a shared email address where we both receive every email sent to it in both of our respective mailbox. And the abality to respond to that email with the same shared email address.

Currently the only thing you can do right now is to create an email address like 'Doe.Family@pm.me' for exemple for yourself and use it like so, but your partener can't see all the emails sent to this address (unless you transfer all of them, but that would be cumbersome) and can't respond themselves either.

It's very difficult to get my husband to leave gmail or other information selling conglomerates where we can share an email for the safer proton mail if we cannot share an email account for bills and other joint accounts.

It’s should be a priority.

Why create a duo plan and market it for couples without having a joint email inbox. I wanted to use the duo account with my partner. But without the joint email inbox with options for a few joint email accounts to share this doesn't have much purpose other than a small discount for two proton unlimited accounts.

Some ideas for implementing this:

1. Maybe Proton could create mail-only accounts so that the joint account would not be entitled to VPN, etc. benefits? Then one could be included in Duo and would avoid people abusing Duo to add a third person.

2. Or maybe Proton could make explicitly joint accounts which can be accessed by the two Duo users (basically, encrypt the joint account keys using each of the user's passwords). This has a few benefits, including tracking who does what in the joint account for auditing purposes (to figure out source of a hack, etc.), and can be reused for business use cases (support teams with shared inbox, etc.). It could also allow you to sign into a single user and unlock keys for all the accounts you have access to at once, avoiding the need to sign into each one-by-one.

This is absolutely essential.

Personal context : On Proton unlimited plan, own a domain name that is intended to be used by family members in the long run. Wife still on gmail. Convinced her to use Proton (free) for our joint address, created for domestic and baby purposes.

Now Duo is a thing, but I absolutely won't be able to convince her to move to a paying plan -duo-, if it can't :
1. include the joint address so we can use the domain
2. allow advanced settings like fully sharing a drive space as co-owners, for baby pics, household stuff.

It should either be a full joint account, or two separate individual accounts with shared admin powers. Maybe some decisions requiring approval by the other account ?