AlertMedia, an emergency alert notification system, Thursday announced it closed on a $25 million investment from JMI Equity.

The Austin-based startup, founded in 2014, has raised more than $42 million to date from investors including Austin-based Next Coast Ventures and Silverton Partners and angel investors.

Brian Cruver, chief executive officer of AlertMedia, announced the funding in a blog post on the company’s site.

“JMI meets with over 500 software companies annually and makes only a handful of investments each year,” Cruver wrote in the blog post. “They invested in AlertMedia because they recognize us as the emerging leader in a critical industry. And because they’re excited about the way AlertMedia’s software helps organizations keep their people safe and informed during all types of events.”

AlertMedia provides big companies like DHL, AT&T, Greyhound and H-E-B with an emergency mass notification system. AlertMedia’s customers can send and receive critical communications via voice, app, email, text, Slack, social media and other channels with one mobile system.

AlertMedia has customers in more than 80 countries. Companies are also using the company’s software for day-to-day business communication and operational activities such as scheduling, dispatching, and other coordination activities.