Abstract: A method may include: receiving a trusted list containing electronic contact credentials for a plurality of members of a group; sending one or more electronic messages to one or more members of the group using the electronic contact credentials for each such member of the group; receiving an account provisioning request, the account provisioning request associated with an electronic messaging address; authenticating the account provisioning request as being associated with a member of the group by determining that the electronic messaging address corresponds to one of the electronic contact credentials in the trusted list; and configuring a threshold for an account associated with the account provisioning request to allow a first threshold, the first threshold being a higher threshold than a second threshold which is in effect for an account that is not associated with one of the members of the group.