Google has plans to warn Gmail users when an email they receive in Gmail comes over an unencrypted connection. Gmail currently has a default that applies HTTPS for the connections between your
browser and its servers, but this approach is relatively new, as most Gmail messages used to go unencrypted. Recent concerns about email encryption drove Google to get begin encrypting its emails in
the past couple of years. Nowadays, 57 percent of emails that Gmail recipients receive from outside ISPs are encrypted and 81 percent of outgoing messages from Gmail are also
encrypted.
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