File link thunderbird without password

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Plaese excuse me gor my bad english writing (an dspeaking too)
I use Thunderbird with owncloud file link that create a link directly. Wich is very convenient for me.
Is it possible to create that link without a password. Oc creates automaticaly a password and the people who receive may mail and the link attached can't dowload it.
If yes, where and how can I configure it ?

Thank you.