Nat.is does not pass your e-mail address to any third party.  It hosts the Search and Booking Engine, which is an independent and direct pipeline between buyers and suppliers as can be seen in the statement below.

The idegaWeb Search and Booking Engine

Below are the stated practices on the disclosure and information gathering of the idegaWeb Search and Booking Engine.

The idegaWeb Search and Booking Engine is operated by Nordic Adventure Travel Ltd and Idega Software Ltd, Engjateigur 4, 104 Reykjavik, Iceland.

You have to enter the following personal information to realize a confirmed order if you use our booking system:
Your name
Your e-mail address
Your postal address
Your credit/debit card number and expiry date
Your telephone number.

Your credit/debit card number, however, does not go beyond your bank, and the supplier only gets its confirmation of payment.  If your card is rejected, only you receive that information.  The idegaWeb Search and Booking Engine uses VerySign to ensure the encryption of you card information.  The supplier and the operator of the Search and Booking Engine receive the rest of the information to be able to inform you of any unforeseeable changes.  They do not use this information for any other purpose and do not pass it to any third party.

By using the idegaWeb Search and Booking Engine, you consent to this privacy statement.  For further information contact nat@nat.is or idega@idega.is or the supplier directly.