Here's how to share your email newsletter to Facebook:

• go to your live website 
• click Email Newsletter 
• click Read Past Issues 
• click on the newsletter title
• copy the url (website address) that appears in your browser's address bar 
• go to your Facebook page 
• paste the url in the Status section
• click Post

If your Newsletter shows up on your Facebook page as just a URL instead of including an image and excerpt, see this FAQ:
Newsletter Only Shows URL on Facebook

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