Please see our white listing tips for Outlook 2003, AOL, Yahoo, Hotmail, Gmail, and Mozilla Thunderbird here: http://www.datamystic.com/whitelist.html
If you use a server-based solution, you need to ensure that the following domains are white-listed
Sending Emaildatamystic.com / qs777.pair.com - our US-based server
optusnet.com.au and bigpond.com - our Australian-based ISPs for email
Try sending an email to datamystic at gmail dot com
Receiving Email With Attachments
Create an account at http://www.DetachPipe.com to send large email attachments.