The Mailman subscription widget allows site visitors to add themselves to a mailing list using the Mailman subscription service. Besides the title, the Mailman subscription Block is not visually customizable.
For more information on the block, view Mailman subscription in our Block library.
Add a Mailman subscription widget
From the administration bar, select Workbench, and then select My Dashboard.
Select a content page from the Content list or create a new page from Content types.
On the content page, select the Layout tab.
Select + Add section if applicable, then select + Add block.
Under Content, select Mailman subscription.
Enter a Title. The Title will appear as a Block header unless Display title is unselected.
From the Mailman server drop-down menu select your desired server.
Under Mailman mailing list subscription URL, type the name of your mailing list.
Select Add block.
Select state from the Change to: drop-down menu.
Select Save layout.