I am getting into cold emailing for promoting my service, but I am unsure of the results that I should expect and if I should continue on with building my cold email list. I have a list of about 2k emails that I am going to try to cold email. These are all emails that I have built from my website (my service is related to my website's content). I was wondering if anyone could tell me the approximate success rate of cold emails for say every 1k emails? For example, if I sent 1k emails, how many responses should I expect to get back? Any help is not just welcome but highly appreciated.