Email subscribers plugin has options to send newsletters to subscribers. It has a separate page with HTML editor to create a HTML newsletter. Also have options to send notification email to subscribers when new posts are published to your blog. Separate page available to include and exclude categories to send notifications. Using plugin Import and Export options admins can easily import registered users and commenters to subscriptions list.
This plugin have subscription box and it allows users to publicly subscribe by submitting their email address. You can add subscriptions box to your sidebar (use widget). posts (use short code) and theme file (use php code).
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