The mailing list for listmasters using Sympa

[address@concealed]

Hi to all,

I am experimenting with sympa, it looks very powerful. 

I am wondering if is possible, and in which way to have for example in the 
footer of any email going for a mailing list a link that permits users to 
unsubscribe quicly, if they want to.

Kind of "if you want unsubscribe from address@concealed, please click here".

For sure can be done because we have source access. Just wondering, as a 
sympa novice, what could be "best practice" for this feature.

Thanks,

Andrea Fino