According to the https://proton.me/mail website, Proton Mail is an encrypted email service based in Switzerland, which provides end-to-end and zero-access encryption for the protection of the user's privacy. They offer a free account that can be upgraded to access more features. Proton Mail is available on all devices, with an easy switch feature to move existing emails and contacts to Proton. Besides email, Proton offers other services, such as a calendar, file storage, and a VPN. Proton secures millions of individuals and more than 10,000 businesses, providing 24/7 customer support across multiple time zones.
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