wp.insider

affmngr

This addon allows you to specify a MailPoet Newsletter list name in the addon settings.
When affiliates join your site, they get signed up to the specified MailPoet Newsletter list automatically.
This addon requires the <a href="https://wordpress.org/plugins/affiliates-manager/" rel="ugc">Affiliates Manager Plugin</a>.
After you install this addon, go to the MailPoet Newsletter settings interface and specify your MailPoet Newsletter list ID and save the settings.
Read the following page for step by step usage documentation: 
https://wpaffiliatemanager.com/sign-affiliates-to-mailpoet-list/

Affiliates Manager MailPoet Integration

An addon for the Affiliates Manager plugin to signup the affiliates to your MailPoet Newsletter list

Formcrafts

This add-on allows you to add subscribers to your MailPoet lists, with forms made with <a href="http://formcraft-wp.com/" rel="nofollow ugc">FormCraft</a>
Please note that this add-on works with <a href="http://formcraft-wp.com/" rel="nofollow ugc">FormCraft Premium</a>, and not <a href="https://wordpress.org/plugins/formcraft-form-builder/" rel="ugc">FormCraft Basic</a>

MailPoet Add-On for FormCraft

Create gorgeous optin forms for your site  with FormCraft, and grow your MailPoet list.

Affiliates Manager MailPoet Integration vs MailPoet Add-On for FormCraft