Drupal Module - Mailing List, cannot export list, get browser error
If you are having trouble with the module you are using, there are other mail-type modules available.


MailChimp - Module to utilize subscriptions/emails with mailchimp.com
Simplenews - Publishes and sends newsletters to lists of subscribers (still in Alpha)
Notifications - Complete Subscriptions/Notifications Framework aiming at extendability and scalability (still in Alpha)