"I'm like a dinosaur," said Reggie Milligan.

While literally hyperbole, there is some truth to his claim. Milligan is the founder and CEO of Mantry, a male-targeted food subscription box. Mantry, which is available in the U.S. and features up-and-coming American brands, has been around since 2012 -- it experienced the precipitous rise of subscription boxes and its fast decline. But the company is still around, still seeing growth and has some plans for expansion.

Milligan, a Canadian entrepreneur, joined this week's Modern Retail Podcast and spoke about the rise and fall of the subscription box industry. He was one of the first in the space, and Mantry got prime media placements in magazines like GQ and shows like Good Morning America. But in 2017, he said, "the bottom fell out."

While Mantry has received acquisition offers over the years, he's focused on continuing to bootstrap the company and still sees growing demand -- especially during gift-giving seasons. And Milligan also believes that while his business won't become a billion-dollar unicorn, the subscription brands that focused on profitability and speaking directly to their customers are the ones that can be around for decades.

"A lot of the smaller bootstrapped ones that were always profitable along the way kind of stuck it out," he said.