As we now have the iOS application (great great step forward), what are the plans for a desktop client?

Cheers!

For Windows, an UWP app would be the best choice.

As inspiration, take a look a Nylas N1, Apple Mail.
Also look at the writing and reading experiences of Svbtle, Medium, iAWriter, MarkedApp.
Support Markdown and other text-only features.
Cross platform - OSX, Linux... (oh, maybe also Windows)

I want a linux web app ;)

Hi!
You can use Fluid (http://fluidapp.com) to create a WebApp of the ProtonMail website. It will stay logged in until you shutdown your computer. By using the existing facebook user script you can even see a badge in the dock counting unread messages. For details ask me at jels@protonmail.com

Desktop Mail Client, the first thing that came in mind using Proton, yea please!

It would be nice to have a linux app too

Oh yes please! i don't use it because of that... this is really needed!

This is really needed. The browser is too insecure for many reasons.

ProtonMail este un server excelent

+1 because PM wouldn't need to push the encryption algorithm to us over TLS every time we log in, thereby increasingly security a little bit (until the algorithm code is updated, which core updates are hopefully never necessary..?)

Sorry, flagged by accident. Fat finger syndrome.
Would love to have emails pop up on my blackberry like my other email does. I want to make protonMail my main email account. It's inconvenient to have to use browser to keep checking emails rather than receiving a 'ding' when an email arrives.

Michael, there is a way for most browsers to mimic separate desktop applications. It effectively opens an independent browser window without the tabs/next-prev buttons/etc. and displays the website you're after -- it looks very much like a native desktop application. It may prove a stopgap until there is a proper desktop application.

Here is an article on it: http://www.pcmag.com/article2/0,2817,2393114,00.asp

It looks like Safari requires a third party application, however there are benefits to using a browser which is not your primary one, such as if your main browser crashes.

I personally use Firefox normally but then use Chrome (or, rather, chromium) for my desktop web apps. In Linux, for example, the command is: /usr/bin/chromium-browser --app=https://protonmail.ch/inbox

The major downside in all of this is the extra bulk associated with loading a browser into memory, but if you've got the RAM to spare, it is much much nicer to view these web services as separate windows, rather than just another browser tab.

Would love an iOS and OSX app. I understand it would be a challenge to secure the private API that should be built, but since decryption is done on the client it should be possible?

Please, please, please make an iPhone app!!

I agree, a Mac client would be great.

This is a good idea, I have proposed similiar thing here:
https://protonmail.uservoice.com/forums/284483-feedback/suggestions/7214966-chrome-firefox-add-on

The point is, that this would protect against Protonmail server compromise and backdooring.

Since IMAP/SMTP integration is not possible (local code is executed in a browser), code executed should be ported to a PM client application that may then be integrated with other mail services (be-your-own-imap/smtp) and run as a daemon - so that updates may be automatically loaded locally as necessary. This would ensure PM users get the benefits of PM security without having to rely on a browser.