Problem with automatic message in Outlook

Hi,

I've been sending PDFs by email using the option implemented directly on Acrobat Reader for a while now, but recently it started adding automatically a message in my email.

I'm French so the message is in French but the translation would be :

Please find attached the PDF.
Download Adobe Acrobat Reader for free to view and comment on this PDF - https://www.adobe.com/go/reader_download_fr

---------
Sent from Adobe Acrobat Reader

It's really annoying having to delete this every time I have to send a PDF (which is quite often), and after searching everywhere
in Acrobat Reader but also in Outlook, I couldn't find the option to deactivate this message.
Does anyone no how to do that ?

Thank you,

Enzo.