When accessing my Yahoo!Mail Plus account from the 700wx using POP3, is there a way I can just select "Send" email instead of "Send / Receive" combined together?

I have a ton of email on the Yahoo server, and have no desire to bring it all down to the treo. When I do "Send/Receive" it tries to download ALL of my Yahoo emails from the past years, even though I selected the "Display last 2 days only" option. Sometimes I just want to send an email, or just receive very recent emails.

Is there a way I can get it to stop trying to receive all of the emails off the server?

The only way I can do this now is to hit "Send/Receive", which starts receiving incoming messages first, then I hit "Stop Send/Receive", which then stops the receiving and allows me to start sending.