You can set up your own email address(es) by clicking Administration -> Email settings -> Add/remove incoming email accounts... and then entering your IMAP or POP3 server settings.
You can obtain your server settings from your internet or email service provider.
When you are done setting up the account, click Test to make sure it works as expected. You should receive a notification of a successful connection and the number of messages in the mailbox. In case of an error message, please check your server settings.
Now, set up your SMTP server. Click Administration -> Email settings and then scroll down to SMTP server settings. Enter the SMTP server settings received from your ISP or email service provider. If your server uses SSL or TLS, please check Use SSL.
When you are done, click Test and sent a test message to test the connection. If everything works fine, you can send a message to your support email address and see how it will be converted into a ticket.