HI!
I updated to ElCapitan on my iMac and am wondering how I stop the mail app from syncing all my old emails when I open mail? I don’t want all my old emails loaded on my computer and previously when I would use mail to create and send a quick email I could hit the X that was by the syncing notification on the mail app and that would stop emails from being synced from my outlook inbox. The X to stop the syncing is no longer there. Now it just says updating mailbox and all these emails are being loaded that I don’t need or want on my computer.
Any way to open mail and use it but stop it from syncing/loading the emails in my external email that is linked to mail?
Does that make sense.? Sorry, I don’t feel like Im explaining it very well. 
Thanks