Any transfers made are received within minutes in the mobile wallets and can be spent by transferring money from the MyCash wallet.
Digicel provides Top Up, Send Money, Bill Pay, and other transactions under a single platform. Consumers can use either its website or its mobile app.
WorldRemit managing director for Asia Pacific, Scott Eddington, said: "We are proud of our history of helping customers send money back home to friends and family in the Pacific Islands, and this new partnership with Digicel will strengthen our offering and give even more choice to consumers.
"Longer term, partnerships like this help us to reduce the costs of remittances to the Pacific, putting more money in the pockets of loved ones back home. It also helps to support our financial inclusion goals, ensuring funds can flow to recipients even where they do not have a traditional banking relationship."
Islands in the Pacific region are heavily reliant on remittances for basic living expenses, with money sent to Tonga representing about 40% of the country's GDP, the highest proportion in the world, according to the World Bank.
Digicel International general manager Christophe Justens said: "Digicel International is excited about this preferred-partnership with WorldRemit. We have been in the airtime remittance, or Top Up, business for many years and we wanted to find a way to provide the same experience when sending money.
"We wanted an easy and transparent way for people to send and receive money. With this partnership, we are doing exactly that for all our customers.
"Bank transfer and money remittance costs remain an issue in the Pacific Islands, and an end-to-end digital experience like the one we're providing now via mobile wallets will reduce the cost significantly for our customers."