A KMail bug has inadvertently sent PGP encrypted emails in plain-text — for the past four years! ‘Kmail’s send-it-later feature was incompatible with the client’s OpenPGP implementation…’ A flaw in the ‘Send it Later’ feature, introduced in Kmail 4.11, allows users to schedule the time and date that emails are sent. Unfortunately, the feature was incompatible with the client’s OpenPGP implementation.

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