Email sending

Hi All,

I have written a program to send the mail. using

SO_DOCUMENT_SEND_API.

and after that i have written submit statement

Submit rsconn1.

When I execute is the email address does not have route from my id, it is giving a pop up by displaying a message cannot be sent with options continue, Inbox.

If i click on continue this will disapper.

How to avoid this dialog box.

Are there is any delay in sending the email from one user to another.