A call is a powerful tool to build a relationship. It allows you to give and get more information. It saves steps in the process as it allows to discuss and arrange a follow up call faster.
So next time you want to follow up on your first cold email, just pick up the phone and dial your prospect. It is extremely easy to start a conversation by saying:
"Hi [Name], this is [your name] from [your company name].
I am calling to follow up on my email about...Have you had a chance to read it? In brief, we help company do ...., and I thought to give you a quick call instead of troubling you via email, to find out if it makes sense for us to connect to discuss..."
I need to warn you here. It is not easy to reach someone on the phone without pre-arranging a call. It takes an average of 8 cold call attempts to reach a prospect, but it will eventually pay off!
But what if you don't have a phone number? Or the only number your have is a customer support that is not entitled to connect incoming calls, suggesting to send an email instead? In this case the best available option is continue following up digitally.