This video is a demonstration of how to increase the file size of an email from the Apeos C2450S. If the default email size is smaller than the document you are trying to send, the document will be broken up into multiple emails. It is a good idea to max out the capacity of your emails as this will allow you to send larger documents in a single email, however, keep in mind that there is still a limit to the maximum size of a document you can send.