Use the Social Share form on the final step of the "Compose Newsletter" wizard When you've finished your e-mail, you can immediately share it:
Insert a "Share" widget in your e-mail from the built-in editor or Email Newsletter Builder: Choose one of the "share" options in the “Insert…” drop down in the toolbar.
Insert a "Share" widget in your e-mail if you're uploading your own HTML files:You can create a link with [SOCIALSHARE] as href. Example: <a href=[SOCIALSHARE]>Interesting? Share this email on social networks</a>
Share an old e-mail from the archives in your account.Choose "Sent Messages" under the "Archive & Reports" tab and click the "View Message" envelope next to your e-mail. There's a "share" option on the following page.