Another factor should be how verification is handled. Too many casinos have "email only" procedures, and this seems to generate "lost document" situations where the player sends the documents, there is no "bounce", and there is even evidence that they have been received, such as an automated receipt or reply from CS. The number of subsequent "please send again" requests is related to the quality of internal procedures for handling and tracking such data. Where repeat requests are generated, it is a sign that the documents have been mishandled between the receiving agent (often front line CS), and the cashiers department/risk team. It can also be caused by the email address not being configured to accept what is being asked for. If a set of documents is wanted, the casino should expect the player to produce 3 or 4 image files, and without more detailed advice, these will be at the native resolution of the device used to generate them. This could give single files of the order of 1 Mbyte, even 2 Mbyte. It is impossible to send less than 1 such file per email, and having to split them between several is not without problems because different CS members may deal with each part, and the whole may not be correctly assembled - leading to the repeat of requests for individual documents that have simply been dealt with by a different member of the team, and not brought into the whole picture when compiled as a set for the cashiers office.
