user_name (User ID) field on sys_user table and customer_contact does not get generated despite the glide.email.create_userid_from_email System Property set to TRUE.Issue The user_name (User ID) field on sys_user table and customer_contact does not get generated despite the glide.email.create_userid_from_email System Property set to TRUE.ReleaseAll VersionsCause"sys_property "glide.email.create_userid_from_email" is used in the case where instance tries to create User when an incoming mail is received and there is no user exists with matching email id of the sender. This property is not used when the record is created manually ( or using record producer) As mentioned above, when the instance is trying to create a new user(in case of inbound email), if this property is set to true, it causes new users to be created with a UserID that matches their email address instead of firstName.lastName. This helps create unique UserIDs when two users with the same name send emails to an instance. It creates a user with the entire email address of the user (including the domain name), instead of just the first part of the email in front of the @-sign."ResolutionThe sys_property "glide.email.create_userid_from_email" is not used by the system when the record is created using record producer / created manually.Related LinksDocumentation Request raised for this missing information on the ServiceNow Docs: DOC76238