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.

wp.insider

smp7

This addon allows you to specify a MailChimp list name for each of your access levels. When members join your site, they get signed up to the specified MailChimp list.
This addon requires the <a href="https://wordpress.org/plugins/simple-membership/" rel="ugc">simple membership plugin</a>.
After you install this addon, edit your membership level and specify the mailchimp list name. Then go to the MailChimp settings interface and specify your API Key.
Read the following page for step by step usage documentation: 
https://simple-membership-plugin.com/signup-members-mailchimp-list/

Simple Membership MailChimp Integration

An addon for the simple membership plugin to signup members to your MailChimp list

Woo Disposable Emails vs Simple Membership MailChimp Integration