Similarly, ProtonMail’s security is invaluable when sending sensitive data. As we’ll see in our quick comparison, Gmail’s flexibility makes it a great choice for using other Google services (such as Docs). Generally speaking, ProtonMail is more secure, while Gmail is more flexible.

That’s not to say Gmail doesn’t have other advantages - or that ProtonMail is without its drawbacks. Though Gmail isn’t necessarily “lacking” in these areas, ProtonMail’s extra levels of protection make it very appealing. However, privacy and security tend to be common concerns among those who switch to ProtonMail. The answer varies between users and their preferences. That’s pretty impressive for a “small” email provider - but why is that the case? While far fewer people use (or even know of) ProtonMail, lots of people who look into it tend to make the switch. Gmail is the world’s most popular email provider Gmail is by far the world’s most popular email provider, boasting over 1.5 billion users.

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