I'm new to Outlook 2007. I used Outlook Express exclusively until now.
I am able to send mail from my primary Outlook 2007 account to itself. I am also able to send mail from the secondary to the primary. However, I cannot send mail from the primary to the secondary, nor can the secondary mail itself. Actually, in these cases, the message does go to the 'Sent' folder, but does not download with a subsequent 'Send/Receive' (All Accounts). But both the primary and secondary receive mail in their correct folders and successfully send mail to outside recipients.
Both accounts are defined the same (POP3/SMTP) and I checked them on my provider's web site -- they are unchanged for over a decade. Not using Live Mail or any other mail client software.
This is not a problem for me, just an oddity: I am simply curious. I believe all the above scenarios worked under O/E.
Why do I send mail to myself? Basically to see what pictures, graphs and other attachments will look like to the ultimate recipient.