Oddbean new post about | logout
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₿logging₿itcoin | 9 months ago (raw) | root | parent | reply | flag +1 
 Oh. Protonmail keeps logs of IP addresses.
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ea93c02c | 9 months ago (raw) | root | parent | reply | flag +1 
 And scans all unencrypted messages.

They keep information about your browser, OS etc.