Emailing is comfortable. You can reread, rephrase and send when it suits you. Calling is not: you may interrupt, you do not know what the other person will say, and an unanswered call feels like a small rejection. So we email again, and again.
The problem is that the telephone is often precisely the channel that settles matters. A collection of sales figures finds that 48% of salespeople never call a second time, while it takes six to eight attempts on average to actually get someone on the line. Someone who calls once and stops has therefore rarely had the chance to sell anything.
This article is not about cold calling strangers. It concerns the warm situation an SME most often faces: someone contacted you or you sent a quotation, and now you need to follow up.