Why this feature is not ready yet ?? :o :o

Leaving this comment to add support behind this feature but to be honest I'm not signing up. This and the lack of shared inbox are a no-go. I really thought send-as was a universal feature. Certainly much more universal than snooze and reply later and those are around. It's a bit weird.

Please, I too have an academic .edu email managed through google workspace, I'd appreciate not having to log into that to reply through that email address. Love the work you do.

yes please.

Having my own domain that does email forwarding already means I do not need to purchase this kind of stuff… but for some reason Proton does not support replying back as the email we got an email sent to? Do I need to go back to Gmail? :(

Neither Tutamail nor Proton support this, it seems like every privacy preserving e-mail provider is trying to be another walled garden of the internet: stay on our platform and we will keep you safe by making it almost impossible to step out of this garden. Problem is, the alternative is to host a bridge and then try to find a reputable mail client that does not spy on you :(

+1 To this. It is a must to be able to use academic and or work related email addresses.

Having multiple academic emails, it would allow storing all of them in Proton. Not having the possibility to use these identities (through external SMTP) blocks the possibility of using Proton for academic purpose.

While switching, I have forwarded me old emails to proton. A nice feature would be to add the old email's SMTP server details so I can continue to send as that email for a short period until I have fully transitioned onto Proton Mail.

+1 Oh yes, please! This is the only thing holding me back from purchasing Proton plan and moving away from Google.

without this feature a cannot migrate to Proton

+1 to this, I would already be paying for proton mail if the desktop app on my laptop had support for external email accounts. It's borderline criminal that a paid service doesn't support multiple email accounts.

This is the one feature holding me back from migrating over from gmail to proton mail.

Vouching in, as an association I personally use currently offers two useful services:

- Email forwarding – a single, stable address that can redirect messages to any new mailbox when members change email providers.
- SMTP “send‑as” capability – the ability to send mail from that forwarded address. Acts only as a forwarding proxy which users trust.

It would be fantastic if Proton Mail could bring these same functionalities into the web interface, so users could:

- Keep one permanent identity to trusted services.
- Send messages from their forwarded address directly within Proton Mail.

Integrating these features would greatly simplify account management and improve continuity for users who rely on forwarding and “send‑as” workflows.

Please add this. It means I can't properly use proton mail with an email being forwarded to me

This is the only feature missing in ProtonMail preventing me to leave GMail completely. I need to be able to send emails from my .edu account

It's the only feature missing @ protonmail and keeping me with google...

My domain is hosted in Switzerland, and I've configured its mail server to forward all emails sent to my address, me@example.net, to my Proton Mail address, username@pm.me. This forwarding setup is working correctly, and I've also added me@example.com as a sending address within my Proton Mail account.

However, when I receive an email at me@example.net (which is then forwarded to Proton Mail), and I click 'reply,' Proton Mail defaults to using my username@pm.me address as the sender.

Ideally, since the original email was addressed to me@example.net (as indicated in the 'To:' header), I would expect Proton Mail to automatically select me@example.com as the 'From:' address when I reply.

By the way: this is also, how other providers like Gmail handle this case.

Even after switching from Gmail, many of us still rely on it for non-essential accounts or less relevant conversations. Ideally, there should be a way to reply from ProtonMail while appearing to respond from the Gmail address. This would maintain both continuity and consistency, without exposing the ProtonMail account. As we all know, fully moving away from Google is nearly impossible. And simple login is not the best solution for it. Any way to do something about this?

I want to be able to reply to and send emails using the same email addresses I forwarded to ProtonMail, directly from ProtonMail’s webmail, without using third-party clients.