Hi pds1976,
since you seem to have your email address and wordpress config under control etc, the quick trick here might be to simply type in:
https://www.yourdomainname.com/yourwordpressdirectory/wp-mail.php
(or if you’ve installed wordpress in your root dir, instead of in a directory like above, try:
https://www.yourdomainname.com/wp-mail.php
If you have trouble finding wp-mail.php, you might best find it using your ftp program.
Whenever you visit the address in your browser, the .php code automatically ‘gets’ the mail for your wordpress.
Just add the address that works to your bookmarks or favourites to reuse this any time you want to process your emailed posts.
If you have loads of posts being emailed to your blog, and you really want to set up a cron job etc, at least the above will get you up and running for now.
See this wordpress help page for all the info you’ll need.
Cheers