Outlook is Microsoft’s new data collection service

With Microsoft's rollout of the new Outlook for Windows, it appears the company has transformed its email app into a surveillance tool for targeted advertising.

Everyone talks about the privacy-washing campaigns of Google and Apple as they mine your online data to generate advertising revenue. But now it looks like Outlook is no longer simply an email service; it's a data collection mechanism for Microsoft's 801 external partners and an ad delivery system for Microsoft itself.

Edward Komenda on the Proton blog

Now, note that this is an article written by Proton, posted on the company blog, so of course they're not going to be too kind towards their competitors. That being said, the article's not wrong: the new Outlook web application, now the default in Windows, not only shared your data with around 800 partners, it also displays ads inside of the application. On macOS, it will even show yo fake emails that are, in fact, ads.

Furthermore, once you add your accounts to this new Outlook web application, you'll also be uploading your username and password to Microsoft, giving them access to your email accounts for advertising and data collection purposes, a shady practice a ton of email clients on mobile devices tend to do as well.

Suffice it to say you really shouldn't be using this new Outlook, and you should make sure friends and family don't either. This is yet another nail in the coffin of Windows, now an advertising and data collection platform first, and operating system second.