how can I create unsubscribe link?

I want to add a link for my contacts to unsubscribe (opt-out) themselves from the email distribution list. How can I create one?

Hi Mini,
I guess you have those commercial E-Mails in mind, giving you the option to unsubscribe. Those guys use Mailing Systems like You may check that depending on the size of your mailing list. A simpler option is to ask the recipents to mail back with the word “unsubscribe”. Than you can do that by hand. 
Greetings Alexander

Thank you Alexander, will do that