Verify MailPoet subscribers before adding them to your MailPoet subscribers list by checking against the
WangGuard service that each new subscriber is not reported as a known Splogger or unwanted user.
WangGuard plugin version 1.5.3+ and
MailPoet Neswletter version 2.1.9+. is needed
Why use WangGuard - MailPoet Connector?
Well, connecting WangGuard and MailPoet, you will be able send activations emails and newsletter only a real people, That means it will reduce greatly the risk of being flagged as spam server (Black listed).
Developers
You will find in this plugin a very easy way to connect your plugin with WangGuard plugin. If your plugin has a form, maybe you can be interested in use WangGuard. Please, never use WangGuard for check Trackbacks or Pingbacks.