Hello Franck, Big Hip changed its Import Policy and does not allow imports.
The reason for this is Big Hip is white listed with many major ISP's including
AOL, Roadrunner, Yahoo, MSN, Earthlink, Hotmail and many more. All Client emails are 100% double opt in. After you create your list you then generate your email panel and customize it to capture any data you wish besides just an email address. Just cut and paste the code it generates on your website, it's that easy
As far as email hitting your junk folder this is something we can't control.
All the mail gets into the network and depending on user settings or HTML size this can trigger filters to place email in a junk box.
White Listing is at the router level.
If you would like more information please feel free to contact me.
Billy
1877 7BIGHIP
1631 588 2993
Yahoo ID: netricsoft