Why bulk SMS marketing? By using bulk SMS marketing, you can avoid the headache of writing complex ad copy. With so much free and open-source bulk SMS software on the market these days, it’s not just an affordable option — especially for small businesses — but it also lets you quickly put your marketing strategy into action. Customers also find it far simpler to believe a message than to respond to sporadic, uninvited calls and emails. Crucial data regarding a campaign’s viability and performance is also provided by most bulk messaging software packages.