[MM3-users] subscribing to a list from a WordPress site

Dear all,

is there a wordpress plugin/widget allowing visitors to subscribe to a mailman3 hosted mailing list? Else, what is the most convenient way? Sure, I could just link to the maiman site, but since joining a list is as easy as sending mail to LISTNAME-join, there should be a simple way to impement this. What is the best practice?

Cheers,

Johannes