How often to follow up with cold leads

[Cornelius Charles]

We are in the process of developing our systems and becoming more efficient with following up with callers. Our plan is to follow up with every caller, even if they are a cold lead. How often should you be following up with cold leads? I'm assuming every week is too often, but not sure if it should be done monthly or even less frequently than that. Any advice from the experienced investors out there would be appreciated.