Managing Newsletter
You can add a newsletter subscription form for collect email of your user, for sending promotional newsletter to them.
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How to Add/Manage Subscription Form
After installing all required plugins(MailChimp for WordPress) you will get a menu named MailChimp for WP navigate to that menu and add your mail chimp API(you need to have an account on mailchimp)
From submenu Form you can make a form for collect mail address from your users.
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How to Show Subscription Form
Add TT Newsletter shortcode from TT Elements and choose your subscription form(if any)
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