Newsletter manager allows you to create and send html, plain text or multipart email newsletters to your subscribers. The plugin supports unlimited email campaigns, unlimited email addresses, double opt-in anti-spam compliance, hourly email sending limit and much more. Opt-in form is available as HTML code, shortcode as well as standard WordPress widget. The import/export tool allows to create and restore backup of your subscriber list. Newsletter manager also lets you configuring multiple SMTP sender addresses.