Be careful: fake emails are circulating in the name of Free/Libre and Open Source projects. Below, an email received by @kdenlive that the official team does not recognize. Be vigilant, these are no doubt scams.
[edit: adding kdenlive hashtag, a request by the team]
@davidrevoy@framapiaf.org @kdenlive@floss.social Kdenlive would never claim their email is "proprietary".
Gonna add a signature to my emails now: "the contents of this email is FREE and OPEN SOURCE"