Locate the Settings icon
and click on it and under Communications select Email & SMS notifications.
Click on any email template to open the pop-up window and locate the word you'd like to hyperlink. Some templates already have Facebook or Google mentioned, but you are encouraged to edit the templates to your liking.
Once you have selected the word, click on the chain icon circled above (Ctrl + K / Cmd + K), paste your social link, and click the save button.
You know a word has been hyperlinked because it will turn blue:
Remember to save changes before you close the template window.
Keywords:
link in email, email link, social media email, social media link, add Facebook page, add website to email, add Google My Business, add Yelp