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ProtonMail, the iOS app, is now open source, but ProtonMail, the service, is still proprietary and (mostly) paid. It's somewhat comparable to using Thunderbird
by fnordsensei 7y ago
ProtonMail, the iOS app, is now open source, but ProtonMail, the service, is still proprietary and (mostly) paid.
It's somewhat comparable to using Thunderbird (open source) to connect to GMail (proprietary). GMail might impose some restrictions regardless of the open source status of the client.