You can use the
APEX_MAIL package to send an email from an Oracle Application Express application.
APEX_MAIL contains three procedures for sending, delivering and adding attachments to emails.
APEX_MAIL.SEND to send an outbound email message from your application. Use
APEX_MAIL.PUSH_QUEUE to deliver mail messages stored in
APEX_MAIL.ADD_ATTACHMENT to send an outbound email message from your application as an attachment.
BEGIN APEX_Mail.Send( 'firstname.lastname@example.org', 'email@example.com', 'This is some test plain text', 'This is some test <b>HTML</b>', 'Test Email Subject' ); APEX_Mail.Push_Queue; END; /
There is a built in limit of 5000 emails in any given 24 hour period. If you try to send more, you get an error.
To learn more, see APEX_MAIL in Oracle Application Express API Reference.