Over the past decade, Gmail has become the go-to email service for most people. A lot of times, it's simply assumed that you use Gmail, and there's actually a bit of a stigma against Yahoo and Hotmail. But, in more recent times, Gmail has actually been losing quite a bit of market share, mainly to Apple. In fact, within the past year, Gmail's market share has plummeted from 35.25% to 27.95%. This translates to hundreds of millions of users, but why are people leaving Gmail in droves? Well, the truth is that much of Gmail's original appeal has worn off as most competitors have either caught up or even overtaken Google's offering. Outlook, for example, offers even more storage than Gmail and Outlook have better integration with Microsoft Office products. Aside from this, Gmail has more or less hit market saturation as everyone who uses the internet frequently pretty much already has a Gmail. So, as competitors catch up to Google's market saturation, Google will just continue to lose market share. Finally, last but not least, Apple has been very much leaning toward the privacy aspect of technology. A great example of this is their recent mail privacy protection program. This video explains the various reasons that Gmail is losing market share and the future of Gmail.