Subscribe to openmod mailing list without google account

I came across a nifty trick to subscribe to the openmod mailing list, because I do not have a google account, nor do I wish to create one. To subscribe to any google group with your regular e-mail address adapt the following URL:

http://groups.google.com/group/openmod-initiative/boxsubscribe?email=my@email.com

replace "my@email.com" with your e-mail address, open the URL in your browser and you’re presented with a dialogue to subscribe to the list. Hope this is of help to anyone and a good location to share it.

(Replace openmod-initiative with the name of any other google group to subscribe to)

This URL is not working anymore, but this solution is doing the job:
https://webapps.stackexchange.com/a/126053