The firm however did not disclose the deal size.
"The acquisition of Bengaluru-based Nudgespot will accelerate our strategy to enable Artificial Intelligence-powered communications between businesses and their customers," said Nick Edwards, CEO and founder of Boomtrain.
With this acquisition, Boomtrain would significantly expand its APAC business.
Together, Boomtrain and Nudgespot would have 70 people in offices located in San Francisco and Bengaluru, and will continue to expand its footprint globally.
"Nudgespot and Boomtrain are pushing the envelope when it comes to bi-directional messaging technologies," said Raveen Sastry, co-founder of Nudgespot.
"Teaming up with Boomtrain will continue to extend our offering to more businesses in need of advanced, easy-to-use B2C messaging solutions, powered by advanced artificial intelligence," Sastry was previously a founder of Myntra Design, which was acquired by Flipkart in 2014 for USD 330 million.