How to Promote Email Marketing Forum?

I also have a email marketing related forum and looking to attract people to signup, please provide me some opinion that can help me to promote my forum.

The forum is

 

you need atleast new and unique thread/post that is very useful.

 

you post new and unique threads about e-mail marketing...

 

I believe that the easiest way to promote anything online for free is by blogging.

 

By submitting articles related to internet marketing and also in another internet marketing forums.By buying member signs,and ad space.

 

SEO, SEO SEO, you need to compete for the organic traffic before you start doing paid in my opinion.

 

Promote your forum with all off-page optimization techniques...

 

Promote your forum in terms of SEO, network with other email marketers and get them to sign up etc.