I can get emails on my IPad but can't send them.Help,please.Thanks.

Did you check the outgoing mail server setting? Make sure that your username and password are in there.

Settings>Mail, Contacts, Calendars>Your email account>Account>Outgoing mail server - tap the server name next to SMTP and check in the primary server and make sure your username and password are entered and correct - even if it says that the password is optional.