1- Opt-in email is a term used when someone is given the option to receive "bulk" email, that is, email that is sent to many people at the same time. Typically, this is some sort of mailing list, newsletter, or advertising. Without obtaining permission before sending email, the email is unsolicited bulk email, better known as spam.

2- Opt-out: Instead of giving people the option to be put in the list, they are automatically put in and then have the option to request to be taken out.

To set preferences:

1. Go to the My Account section and open the Settings folder.

2. Select Preferences. The preferences dialog opens up.

To set preferences for subscribing and unsubscribing: click the Opt-in / Opt-out tab. You will be able to set preferences for the unsubscribing process (opt-out) and for the subscribing process (opt-in).

1. In the opt-in setting, you define whether a contact that subscribes to your list via a send-to-friend form or a form on your website should:

   • not receive any e-mail. Choose "None". The contacts subscribes through the form and that's it.

   • receive a confirmation e-mail. Choose "Confirmed opt-in". The contact subscribes through the form and receives an e-mail to confirm his subscription.

   • receive an e-mail by which he can confirm his subscription. Choose "Double opt-in". The contact says he want to subscribe through the form, he receives an e-mail to ask for confirmation. Only when he confirms by clicking the link in the e-mail, the contact is subscribed to your list.

2. In the opt-out setting, you define whether a contact that unsubscribes via the unsubscribe link in your e-mail should still receive an e-mail confirming his unsubscription. You have the following choices:

   • no: no e-mail will be send to unsubscribers.  

   • yes: a confirmation e-mail will be send to unsubscribers.
     
     
     

     

     Figure: Default opt-in/opt-out settings. No e-mail will be sent when a contact unsubscribes, and there is no action via e-mail when a new contact subscribes.