I can't seem to copy a pdf directly from the Acrobat app for iOS (iPad) to the Mail App.
Currently I share to Mail, then select the document and cut/paste into an email.
Ideally I would like to select several documents at once from the Acrobat App and then paste them into an email I am already composing, not share into a seperate email and then have to individually copy and paste them. Is this a current or future feature?
At this point of time there is no such option to copy PDFs directly from Acrobat Reader app. The only which is available is to use Share File option.
I will suggest you to fill the feature request form here for sharing multiple PDFs from Acrobat Reader.
As a workaround I can suggest you to use Adobe Document Cloud using which you can upload the documents to cloud storage.
After that you can login to https://cloud.acrobat.com/send and send multiple PDFs.