You may have used MailChimp or ConstantContact or CampaignMonitor for this. All of these are vastly preferable to rolling your own solution, because they will take care of opt-in and opt-out and all the other niceties of “not running afoul of the CAN-SPAM Act” in the USA, as well as the far more stringent EU regulations around privacy and commercial speech. Each of these services provide you with a little snippet of code that you can paste into your page and get an instant sign-up form. MailChimp in particular is incredibly generous about what you can do with a free account, and all of them have a free level as far as I know.
Walter
On Mar 11, 2014, at 4:23 AM, Johan wrote:
I used a e-mail filling field in my previous where visitors could subscribe or un-subscribe for a newsletter.
I really can’t remember how and with what action it was don.