Does Acrobat Reader use Simple Mapi or Extended Mapi?

Hello ​@Andrej27141962gypv 

I hope you are doing well, and thank you for reaching out.

Please note that Acrobat Reader uses Simple MAPI to hand off PDFs to the default system email application when you choose:

Menu > Share File > Attach to Email

This behavior is limited to basic email composition (new message + attachment).
Acrobat Reader does not use Extended MAPI and does not integrate directly with Outlook profiles or advanced mail features.

To learn more, please see this article: https://helpx.adobe.com/acrobat/desktop/share-and-review-documents/share-documents/share-pdfs.html

Thanks,

Anand Sri.