Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
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They block both @protonmail.com and @pm.me aliasesl?
It seems I did not try making a Lenovo account with the pm.me alias address. I did use a protonmail.com address when tried before swapping to making an account using a Tutanota address and attempting to replay the purchase sequence. I don't remember the conversation I had with support when they deduced the error to protonmail addresses not being eligible for purchases for not "being verifiable" despite the fact that payment and billing information is also provided in a purchase. I don't remember if the support technician claimed that the pm.me alias would also be blocked, but for some reason I never tried it.