A new option is available for member and officer email group email discussion lists, where any list member is enabled to send a message to all other members. This provides an easy method for distributing club announcements and appeals for help with an event or project.

Members can unsubscribe from these messages, and administrators can block members from sending if they abuse the privilege.
The new mailing list facility is a feature of RSVPMaker, one of the WordPress plugins included in WordPress for Toastmasters.

If you administer a club website that previously established a mailing list using an integration with the WP Mailster plugin (previously the default for toastmost.org sites), you will see a prompt on the dashboard suggesting that you will switch. The email settings will automatically be imported from WP Mailster, allowing you to make the switch with a minimum of hassle.
If you prefer the WP Mailster functionality, you can keep it. Just be aware that if your list grows beyond 50 members, you will start getting messages prompting you to update to the paid version of that plugin. The RSVPMaker version is also more tightly integrated and tailored to meet club requirements.
More detailed documentation for setting up the RSVPMaker Group Email feature is available here.
Toastmost.org users who wish to establish a new email list should contact me for assistance because it requires configuring email accounts to act as queues for each list you establish. I don’t have a self-service way of enabling that, at least not yet.