How to not be marked as spam ??

I am ewhoring and I need to find a way... not to be marked as spam when i send out emails.

I tried sending myself an email with just plain text and 2 html links, that didnt work I was marked as spam.

I then sent a template to a new email acct with no attachments or html links just text and I still was marked as spam in the yahoo spam folder..

I am just asking for general guidelines. I thought it would be as simple as not sending attachments and just plain text with no links..

Can anyone weigh in...

It all depends what type of anti spam is used
Bayasian, rules, reputation, blacklists
some try to match to known spam, others use keywords, or even key links
You need to know which software is blocking you, then work around it

Interspire Email Marketer has this functionality. Search it here and you'll find it