Simon Prosser

No need for a subscription of ANY kind.
This plugin does not check against any remote subscription based lists.
The blocklists used by this plugin are public domain and listed below.
Includes user defined whitelist & blacklists.
Contribute to the plugin on Github: https://github.com/Pross/woo-disposable-emails
The main blocklist is located here: https://github.com/martenson/disposable-email-domains
Settings for the plugin can be found in the main WooCommerce settings panel under Integrations.

Woo Disposable Emails

Block disposable email addresses at signup in WooCommerce.

Zack Katz

<h3>Simple iContact Signup Form Installation on Your Blog</h3>
Add the iContact ‘Automatic Sign-up Form’ to your sidebar with this widget. Simply paste the code from the form you created in iContact into this widget. Your form will be converted into HTML (instead of Javascript, which takes more time to load).
<h3>iContact Widget Configuration Options</h3>
<ul>
<li>Change the width of your form</li>
<li>Change the submit button text</li>
<li>Choose which page to redirect users to upon successful completion</li>
<li>Open the form in a new window</li>
</ul>
The plugin includes shortcode support — add an iContact form into your page or post!

iContact Widget

Add an iContact newsletter signup form to your sidebar or content and easily update how the form looks.

Woo Disposable Emails vs iContact Widget