Outlook just asked me if I want to upgrade to bigger ads
I'm pretty confident this is to comply with a recent EU ruling that held that EU antispam laws apply to display ads that look like an email in your inbox.  In essence the left prompt is a marketing email opt-in, even if it doesn't look like one (nastier people than I would say it's disguising its true nature - not I, of course).<p>Here's the CJEU case in question: <a href="https://www.insideprivacy.com/european-union-2/court-of-justice-of-the-eu-finds-that-advertising-shown-in-email-inbox-is-subject-to-rules-on-direct-marketing/" rel="nofollow">https://www.insideprivacy.com/european-union-2/court-of-just...</a>