Many people are complaining about the new Share panel in Adobe Acrobat (and Acrobat Reader) 2019 and about how it "hijacks" the "Send File" command and turned what used to be a simple process into an ordeal...  Well, now there's a solution!
With this FREE tool I've developed you can restore the option to send your files from within Acrobat or Acrobat Reader 2019 with a single click!

The current user interface has this new "Share File" button under the File menu:

Old interface - Step 1 of sending file

When you click it, the Share panel on the right opens (after a while):

Old interface - Step 2 of sending file
And then you still need to click on Send as Attachment, select your mail application and press Continue before the actual email is generated:

Old interface - Step 3 of sending file

A long and annoying process.

Well, after you install this script (detailed instructions are provided with it, of course), the old "Share File" item is replaced by my "Quick Send" item, which will create a new empty email with the current file attached to it the moment you click it (there might be some confirmation dialogs the first time you use it):

New interface - ONLY step of sending fileThis item can even be accessed using a simple keyboard combination: Alt+F, Q.

And if you're using Acrobat you can even add it directly to the Quick Tools toolbar, for even faster (single-click) access, as it also adds a new toolbar item under Tools - Add-On Tools!