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Email a webpage shared from Safari in Mail on Mac
When you share a webpage from the Safari app (click the Share button 
in the toolbar of the Safari window, then choose Email This Page), you can choose the format in which to email it.
In the Mail app
on your Mac, click the Send Web Content As pop-up menu in the bottom-right of the message header.Choose one of the following formats:
Reader: Sends a version of the page that’s optimised for easy reading. This option is available only for pages that offer Reader in Safari.
Web Page: Sends the contents of the page (including text formatting, page layout, images, and text and form fields).
PDF: Sends the page as a PDF document and a link to the page.
Link Only: Sends a link to the page.