Share or post web pages in Safari on Mac
With the Share button , you can share a web page from Safari using Mail, Messages, Notes, Reminders and more. If you’ve recently shared with contacts, they appear at the bottom of the list so that you can easily share with them again.
In the Safari app on your Mac, click the Share button in the toolbar or choose File > Share.
Choose how to share the web page.
To choose which items appear in the Share menu, choose Apple menu > System Settings, click Privacy & Security in the sidebar, then click Extensions on the right. (You may need to scroll down.) See Change Extensions settings.