Forward pages document by email

Quit Pages. Visit the System Preferences : Extensions panel : Share Menu entries. Is the Mail item already checked, or is present with an empty box to be checked by you?

There may be an issue with the Launch Services database in OS X. You are right. It shouldn't be happening. Quit Pages, and other applications. From Launchpad, click the Other category, and then click Terminal. From this Apple Support article, triple-click the scrollable command sequence, and then paste it into your open Terminal window. It is non-destructive, and takes about 5 seconds to run. Quit Terminal afterwards.

I would shut the Mac down, and then power it on. Check System Preferences : Extensions : Share Menu that the Mail item is still checked. Quit System Preferences. Open any Pages document, and via Share toolbar item, see if the Mail sub-menu item has returned, and is functional.

If there is no change from the above paragraphs, then I have the same command with more comprehensive settings that has been known to work in the Pages Support Community when the above Apple command sequence did not. Let me know, and I will post it here for you.

If you clicked on that hyperlinked Apple article that I provided, you will see a new page with a horizontal window in the middle of the page containing a (scrollable) UNIX command sequence.

You left-click the mouse button (or left-tap on a trackpad) three times to select the contents of that horizontal window. Once it is selected, you can copy/paste it into an opened Terminal application window. That deposits that command, and by pressing return, it will silently run. When it is complete, you will receive another Terminal prompt, and you can quit the Terminal app.