Hey,
great it works...
Don't know about the spam, what i can think off is that you may not be sending e-mails from the domain that the link in the e-mail refers to? At least thats when i would think it's possible spam :)
To get more serious help you will probably want to investigate first why exactly it gets marked as spam as every e-mail filter will use its own analysis why it is marked like so...
Bookmarks