Generating authentication credentials includes receiving from a first user input identifying a customer identifier for an online account with a business or organization and a residential or business physical address, and sending via a network a notification to a first user system to follow instructions on a mail piece to be received by the first user. The mail piece is physically sent via a distribution network to the physical address and an online application is activated in response to scanning a coded indicia on the mail piece. Data indicative of an identity of the first user is received and the identity of the first user is verified based on at least information associated with the coded indicia and the received data. A recommendation is generated whether to approve the online account and an electronic credential is created for the first user based on acceptance of the online account.