Maybe some kind of partnership with an established antivirus provider that supports the same mission of privacy.

Ich brauche das dringend weil ich schon alle Proton Dienste haben und ein Antivirus noch fehlt und weil es die Sicherheit verbessert

Antivirus is useless if the users know what they are doing.

Antivirus is not needed nowadays. The users need to know what they are doing.

Bonjour,
Un antivirus serait effectivement une bonne idée pour faire de Proton une solution de sécurité intégrée. Ceci éviterait aux clients de devoir changer de fournisseurs d'application.

Yo voto hasta con los pies por un Proton antivirus!
Eso si, deberán tener en cuenta que deben tener todas las opciones de sus mayores competidores como avast, kaspersky o norton, yo uso kaspersky porque es de código abierto por lo que no robará mis datos pero tiene pocas opciones que realmente me interesan, además deberán incorporar cosas revolucionarias como incluir análisis automático con VirisTotal el mejor escaner del mundo para virus de momento

A firewall would also be nice

Create an app for mobile and on pc allowing users to scan their files for viruses and allow app protection against malware. A bit like Malwarebytes or Norton.

I totally agree with this comment. And that's exactly what I wanted to write. As I always use an online translator, I just past it:
Have you ever considered developing an antivirus? After searching through multiple services, I've found that even the most reputable ones almost always sell your data. I'm so tired of searching for an antivirus that doesn't do this. I would like to use a service that has the same kind of data integrity that Proton is founded on. Proton is so well-developed I believe it's something they could do. Something to consider?
I am particularly happy to have found a company that does not sell our data, it is detestable

Please build an entire security center dedicated to protecting users while remaining focused on privacy. The current choices are terrible products...McAfee, Norton, Kaspersky, Avast and so on.

Have you ever considered developing an antivirus? After searching through multiple services, I've found that even the most reputable ones almost always sell your data. I'm so tired of searching for an antivirus that doesn't do this. I would like to use a service that has the same kind of data integrity that Proton is founded on. Proton is so well-developed I believe it's something they could do. Something to consider?

I also can tell People how to make a better Anti Virus that what is currently out their if people gave a care to listen.

A separate New App to scan and remove existing viruses and malware from my my iPhone

A separate app to use to scan my iPhone, not just my ProtonMail app.

Greetings. Not so much a new feature, but if Proton could come up with centralized virus protection, I could dispense the Bitdefender(not that it's bad) and keep my business under one roof. Otherwise, I'm a fan.

I would happily pay for antivirus/firewall software that I could trust to respect my privacy.

I also would love to have a Protonmail antivurus even if it was a paid feature.

Almost without question whichever virus software or firewall I use I am nervous of the country of origin interfering in its running. ProtonMail has built a reputation that is above such interference. Although this additional service maybe available / in consideration I would certainly support its introduction.

anti virus is designed to fail and will be that way until they are forced to changed.

I'm reposting this here, as the two other search results are in the "New features" and "Features seen on other services" sections.

I'm thinking about this since Avast forced its own certificate on my Twitter and Facebook tabs, and it's hard for me to trust a free antivirus, especially with so much dark patterns.

I'd really love to see a ProtonMail antivirus with a free tier that anyone could blindly trust, and it would make ProtonMail the new big deal for the representative Windows/macOS user.

This would also be great for the open-source community, since ProtonMail always invested funds for supporting the Linux ecosystem (by developing the protonvpn-cli or by porting the ProtonMail Bridge to Linux).

We could consider various services, up to a Comodo-like firewall for Windows, macOS, and Linux computers. I'd definitely pay a reasonable yearly amount for this.

Thanks to the ProtonMail team and to the ProtonMail community, developing and funding a free email and VPN service!