The best alternatives to StealthMail are MacPaw, ProtonMail, and AnyAlias. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hurree— The smarter, simpler way to analyze your data
MacPaw develops and distributes innovative software for macOS and iOS that simplifies the lives of Mac users. Renowned for its meticulously crafted products, such as CleanMyMac, CleanMy®Phone, Setapp, and ClearVPN, and known for its Moonlock cybersecurity division, MacPaw is dedicated to enhancing and securing the Mac user experience. Founded in Kyiv, Ukraine, with a subsidiary office in Boston, MacPaw serves millions of users worldwide.
ProtonMail was founded in 2013 by scientists who met at CERN and were drawn together by a shared vision of a more secure and private Internet. Since then, ProtonMail has evolved into a global effort to protect civil liberties and build a more secure Internet, with team members also hailing from Caltech, Harvard, ETH Zurich and many other research institutions.