I've just downloaded Maverick and now my emails won't send from my Mail account. I've tried re-setting them, and not sure what to do now.
If you are having issues with sending email since upgrading to Mac OS X 10.9.3, you may want to go through the steps in this article for help -
OS X Mail: Troubleshooting sending and receiving email messages
Thanks for using Apple Support Communities.
Retrieving data ...