Checkbook.io, an online payments processor, has joined Visa's Fintech Fast Track program to speed up the process of its integration with the Visa network. The company also aims to gain access to Visa's global payments processing network VisaNet, according to a press release.

Checkbook also plans to launch its Virtual Cards, a 16-digit card with a pre-determined spending limit that can be sent over email. The receiver can save the card's information and use as they want, according to the release.

"By joining Visa's Fast Track program, exciting Fintechs like Checkbook gain unprecedented access to Visa experts, technology, and resources," Terry Angelos, SVP and global head of fintech, Visa, said in the release. "Fast Track lets us provide new resources that rapidly growing companies need to scale with efficiency."