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.