Yahoo Inc. plans to offer unrestricted e-mail storage facility to it's about quarter of a billion users, starting in May, announced last week.

The world's largest e-mail service is scrapping its free e-mail storage space limit of 1 gigabyte, or about a billion bytes of data, countering to unstable growth in attachment sizes as people share ever more photos, music and as well as their videos via e-mail.

Yahoo says "We are giving them no reason to ever have to delete old e-mails," Yahoo co-founder David Filo said in a phone interview. "You can keep stuff forever."