Fiserv this week announced that a new charitable giving feature has been added to the Popmoney personal payment service, enabling consumers to donate to hundreds of charities directly from their online or mobile banking account, according to a press release. United Way, the largest privately supported nonprofit in the world, is one of the first national charities accepting donations through the service.

"Popmoney provides our donors with an easy, convenient way to contribute to United Way," said Paul DeBassio, executive vice president of investor relations for United Way Worldwide. "Digital donations are in sync with people's fast-paced, modern lifestyles, and eliminate the hassles of writing a check or filling out and mailing in a form."

For charities, Fiserv said contributions received using Popmoney are more convenient to process than checks, and more cost-effective than card payments. Consumers who send donations using the Popmoney charitable giving feature receive from the charity a record of their electronic transactions to be used for tax purposes, according to the the announcement.

Popmoney is offered at Popmoney.com, through apps for iPhone, Android and Windows Phone, and through the online or mobile banking sites of more than 2,400 financial institutions. Users only need a recipients' name and phone number or email address to send funds.