how to send big memory to mail?

i have splited files using winrar but i am sending in yahoo its coming attachment failed so what to do but in gmail there is option for sending turn off
Attachments:Advanced attachment features - See progress bars when attaching files to messages, and attach multiple files at once. Requires flash. Learn moreBasic attachment features - Attach one file at a time and don't show progress barsthen what is the option for yahoo mail